Trub Experiment

I took a couple bottles from the Bavarian Hefeweisen I brewed for the newest BBR/BYO collaborative experiment to the MUGZ meeting this afternoon. This experiment was to determine the effect of leaving trub (that gunk that collects at the bottom of your kettle after cool-down)  in the finished beer. Personally, I tend to throw most of the trub into the fermentor, although I couldn’t tell you why.

To perform this experiment, I brewed a new version of my Hefehosen. After cooldown, I racked the top half of the kettle into one 3 gallon fermentor for the “clean”, non-trub half. The rest I dumped directly into an identical 3 gallon fermentor for the “dirty”, trub-ified half. I aerated each half with my aquarium pump for 15 minutes and then pitched half a vial of WLP380  into each fermentor. This didn’t look like much yeast at all, so I found an ancient (best before 9/2010) satchel of Danstar Munich yeast and added 6 grams of it to each fermentor. I then placed both fermentors side-by-side on a shelf in my cellar, to ferment at 64F.

I took a picture of their status every day. In each picture, the “clean” half is on the right, and the “dirty” half is on the left. Not that I needed to tell you that… I mean, look at them:

Right out of the kettle. The dirty half is aerating.

 

Later that night, the dirty half has settled pretty well.

 

After 1 day

Day two: the fermentations are at their peaks.

Day 3. Fermentation has slowed down.

 

Day 4. Fermentations almost seem to be complete.

Day 5. It's hard to tell from the photo, but the dirty half is done fermenting but the clean half is still doing a little work.

Day 6. Both are basically done fermenting.

Day 7. No fermentation activity, but the krausen on the clean half is just sitting there, inactive.

Visually, there was a big difference. The dirty half started later, but finished sooner, which makes me think that the trub is beneficial to a healthy, quick fermentation. Aromatically, the clean half was much more intense during fermentation. Whenever I would remove its tinfoil hat the smell would punch me in the face – loads of phenols and some sulfur action going on. Later on in fermenation that dropped off and was replaced with a pleasant banana character. Meanwhile, the dirty half was much less intense, but more muddied. It was hard to pick out what exactly I was smelling, although later on I did get a lot of clove.

I bottled after 10 days in the fermentor, and had my wife give me a blind triangle test 6 days after that. After watching the fermentation and smelling them, I didn’t find this to be a challenge. I easily picked out which was which. The dirty half had a very defined clove character in the nose and mouth and visually was less cloudy. The clean half had banana characteristics in the nose and mouth and was pretty cloudy. I’m thinking the dirty half’s healthier fermentation was to blame here. I have heard that if you want a clovey weizen, pitch a lot of yeast and if you want a banana-y weizen, pitch less. Although I pitched the same yeast in both fermentors, the trub provided a more ideal environment for the yeast and therefore simulated a higher pitching rate.

When I took the samples to MUGZ, I didn’t tell anyone what sample was what. I just had the mysterious labels of A and B. A being the dirty (trub-ified) half and B being the clean (no-trub) half. I asked the testers to fill out little slips of paper saying which they thought was the trub sample and which they preferred. Here are the results:

13 people thought the dirty sample (A) had the trub removed.

3 people thought the clean sample (B) had the trub removed.

5 people said they couldn’t tell.

6 people said they preferred the dirty sample (A)

13 people said they preferred the clean sample (B)

2 people said they didn’t have a preference

 

What can we get from this? For one, if the 21 testers are a good representation of the general public, then what most people think of as a “dirty” beer is wrong. On the same token, 13 people preferred the clean beer while less than half preferred the dirty beer. 5 out of 21 people couldn’t tell the difference.  Thanks to all the testers by the way!

So will this change the way I brew? Actually I think it will. Sure, the fermentation took longer in the clean half, but people obviously preferred it over a beer where you just throw all the trub in. But then again, a Hefe is all about the yeast – strain and pitching rate. I’d love to see the results from a beer where the yeast doesn’t take center stage (maybe a Stout or a Pilsner?).

A Tale of Two Cities’ Beers

 

The unbelievably massive Kolner Dom in Cologne. I couldn't get the entire cathedral in frame.

I’m brewing a Dusseldorf Altbier today; it’s currently in the mash tun, resting at 150F. I took Jamil’s recipe from Brewing Classic Styles and made a few slight modifications due to a shortage of two of the malts. Fortunately, I”m still within the style guidelines. Although it’s not like it really matters. Not in the US at least. I have yet to try an American made Altbier that is as good or sessionable as the examples I tasted in Dusseldorf last summer.

I’m not so much of a snob that I think you can only get good Altbier in Dusseldorf. On the contrary, I believe any beer can be made anywhere (with the exception of spontaneously fermented ales). Why there are no good American-made Altbiers has more to do with the lack of good imported examples. The precedent simply hasn’t been set on this side of the pond.  I can’t blame a brewer who has only read about Altbiers and sees them described as hoppy (by German standards) beers to then turn around and make a hoppy (by American standards) beer. Somethiing certainly gets lost in translation.

On the other hand, Altbier’s cousin, Kolsch, has scores of excellent, traditional examples in the US. I’ve been making one for a couple years that is a favorite among friends that I designed long before my stay in Cologne. I had imported Sion and locally made Summit Kolsches as my guidelines, along with the excellent Classic Styles Series book on Kolsch (all I really got from the Altbier book was that “Alt” means “old”). So why are there so many great examples of Kolsch in the US, but none of Altbier? To answer that, you need to look for something that you won’t find in a recipe or in the BJCP style guidelines. To borrow from their neighbors, it’s a certain je ne sais quois. In other words (and I just watched Moneyball yesterday), how can you not be romantic about beer?

My wife and I had been planning a trip to Europe for a few years. Initially, our plan was to go to Ireland, as we both have Irish ancestry. Sometime during those years of planning, I met a German man through work who became a close friend, so his country got bumped into first place (Ireland is on the board for our next trip now). We flew into Munich in late August and over the course of 8 days, drove all over southern Germany, spending each night in a different town, until flying out of Dusseldorf. In short, it was amazing, and I highly recommend the trip to anyone who has the time and money. We spent the second to last night in Cologne, and took a train up to Dusseldorf  the next day.

Cologne, like much of Germany, is entrenched in old and new history – less than a kilometer from our hotel was a series of ultra-modern office buildings, including a quite impressive one inhabited by Microsoft. About a kilometer beyond that was the massive 19th century Kolner Dom. In-between those two was a beautiful park along the Rhine River, dotted with the Altstadt (Old Town) buildings. The weather was beautiful the day we were there and many people were lazing out in the park and enjoying meals and drinks in the outdoor cafes.

A beautiful, fresh glass of Kolsch at the Sion pub in Cologne.

The jet lag had really thrown off our eating schedule, so we had lunch in the hotel restaurant at 3pm. If I remember correctly, the beer menu had a Pilsner, a Weizen, and a Kolsch. I ordered a Kolsch and the waitress either the waitress misheard me or I mispronounced it, so she asked “Do you mean, the city beer?”. Kolsch and Cologne are synonymous in any beer drinker’s mind, so hearing her ask if I wanted “the city beer” was beyond amusing for me. She seemed glad that’s  what I ordered. Looking around the restaurant, most people were drinking Weizens. The beer came out in the standard 25mL Stange glass. The nose was beautifully biscuity – like fresh baked bread – and was more aromatic than most commercial examples I’d tried. The taste was good, but not really any different than anything I’d had stateside. There’s not a whole lot going on in the taste of a Kolsch – it is meant to be a session beer afterall.

The session characteristics are emphasized at the Sion Brewery. It’s just a short walk from the Kolner Dom, down a narrow brick street. We found a table outside and almost immediately had a waiter ask us what we would like to drink. We ordered two Kolsches, which he pulled off of a circular platter that probably held close to two dozen stanges of Kolsch. He ticked my coaster twice with a pencil. In the hot sun of that day, our first glasses didn’t last very long. The waiter came by again and asked if we wanted more. He handed us two more and ticked my coaster twice more. Throughout our time there, the waiter would swing by, ask us “More?”, and swap out our glasses. We almost never had an empty glass. You just don’t find that kind of service in Germany, or even the US. Kolsch is low alcohol and very easy to drink. I could see it as being a very dangerous beer at a cafe with a group of friends and an attentive waiter.

This beautiful canal seemed out of place in the otherwise modern, urban downtown Dusseldorf.

The next day we took a train up to Dusseldorf. The ride was only about 45 minutes, but felt much longer due to a group of teenagers across the aisle from us that may have never bathed in their entire lives. The train moved slowly and made a few stops. We saw the rustic clean charm of Cologne turn into industrialization and urbanization. Buildings seemed newer, but were covered in graffitti (which was actually a welcome balance to their drab, gray stone exteriors. Once we checked into our hotel and began to explore, I realized the city definitely seemed more “American” than the others we had been visiting. The buildings were larger, more modern, and less charming. The streets were wider and straighter, but busier. We had to walk quite a ways to get to the Altstadt. Massive modern buildings locked the Altstadt into a few crowded blocks. This was quite a change from Cologne, which is surprising considering the short distance between the cities – they’re practically connected.

From http://en.wikipedia.org/wiki/File:Diebels_in_Altbierglas.jpg

The Altbier glass is shorter, but wider than the Kolsch Stange.

Many of the cafes were filled to capacity so we eventually found one with a few tables open. The food was passable, but not great. Fortunately, they carried Altbier. It came out in a 20mL glass similar to the stange – only shorter and wider. The beer was a dark brown with only a small head. It smelled pleasantly musty and malty. It reminded me of cellars and beer aged for long periods of time – think old British Crystal malt. I didn’t get my coaster ticked, but the waiter did swing by a couple times to make sure I didn’t have an empty glass. Later that night, we had a meal at the hotel restaurant. I ordered another brand of Altbier. The waiter seemed happy that an American tourist was ordering his city’s beer. He asked me what I thought of it and whether I liked it. I told him I had never had anything like it and I loved it. He seemed very pleased at that answer. That’s when I realized that Altbier and Kolsch are very similar.

The two beers may be on different ends of the color spectrum, but they’re both easy to drink, sessionable beers. They both have a heavy emphasis on bready, biscuity flavors, but one emphasizes fresh while the other emphasizes aged. The elusive (at least for Americans) Altbier, is the older, darker cousin of the Kolsch. That hoppiness that is so often attributed to Alt comes from balancing out the caramel and Carafa. These two beers have more in common than what separates them. Of course, I’d probably get run out of whichever town I made that statement in. The residents of those two cities are fiercely proud of their beer, and for good reason – they’re both fantastic session beers. Prost!

Honey-Do Honey-Brew Bettendorf Altbier
Kolsch-style ale with Honey Dusseldorf-style Altbier
80% Pilsner 70% Pilsner
15% White Wheat 15% Munich
5% Honey 5% Carawheat
8% Biscuit
2% Carafa II


26 IBU Pearle @60 38 IBU Northern Brewer @60
2 IBU Hallertau Mittlefrau @15


WLP029 WLP036
1048 OG 1052 OG

Preview of my newest experiment

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The world needs more female brewers

The Lady Rossling
Shortly after my wife and I returned home from our vacation in Germany we discovered that we were going to have a baby. It’s our first one, so I’m equal parts excited and terrified. The ultrasound was last week and we discovered that:

1) there’s only one baby on the way
2) it’s a girl
3) she appears to be healthy
4) the initially predicted due date of May 15 remains

Maybe she won’t follow in her father’s footsteps and pick up the hobby, but I do plan on encouraging it.

Where are you?

Often times when I meditate I like to think about where I am physically. I feel that I, like most people, spend so much of my day lost in my own thoughts and perceptions that I forget where I am physically. So I like to see how far I can go to pinpoint where I am.

When I meditate, I’m usually on a cushion in the corner of my home office, which sits on the ground level of my house, which sits in a culdesac in the northwest corner of the city. This city is on the north side of a bend in the Mississippi River in Iowa, which is a little southeast to the center of North America. North America sits in the overlap of the northern and western hemispheres of Earth. Earth happens to be the 3rd planet from the Sun and is currently circling somewhere around it inside of the Milky Way Galaxy. At this point my astronomy fails me, but if you follow the current belief of astrophysicists, the Milky Way sits somewhere inside of an infinitely large universe.

So I don’t know exactly where I am right now. Things got a little blurry after we left Earth and I got completely lost after I left the Milky Way. Your exact location isn’t the important take-away from this exercise – understanding that you’re somewhere within an infinitely large space is what’s important. From where you’re sitting reading this, space extends infinitely to your left, right, front, back, above, and below. You can’t possibly fathom how large infinity really is, but attempting to should be a very humbling experience.

Image: nuttakit / FreeDigitalPhotos.net

After I’ve ooked out as far into the cosmos as I can for my exact coordinates and have realized I’m completely lost, I turn that infinitely long gaze inward. I’ll pick an arbitary point as close as I can get to the center of my body – maybe my stomach. It’s located just south of my ribcage, above and behind my belly button. Inside of that is stomach lining, stomach acid, and the remins of my lunch. Inside of the stomach lining are millions of cells. Inside of one of those cells is a nucleus, mitochondria, et al. Those components are made up of atoms, which are made up of protons, neutrons, and electrons. We can look further yet, to the quantum level, and even further still to a level no scientist can observe or measure. In effect, we can go infinitely inside of ourselves.

The cool thing about infinity is that it’s too large for us to measure or even imagine. We just can’t do it. The universe is just as infinitely large as the space between our electrons is infinitely small. Somewhere between the infinite reach of inner and outer space is what you call you.
Before you go and think you now know where you exist in the universe, let’s take things a step further. When I set up the exercise of looking infinitely out into the universe and infinitely in, it’s easy to think there is some defining point or line between outer and inner space. But while you were reading this, maybe you were taking a drink of water or enjoying a snack. At the very least, you were breathing. All of those things involve you taking something from the outer space and bringing it in to your inner space. That breath of air filled with oxygen and dust and any number of other gases was inhaled into your lungs and was used to provide energy to your cells, affecting the space between your atoms, among other things. When you exhaled, you returned some of your inner space back into outer space, blurring that line through the universe in a process that will continue as long as you keep breathing.
So where are you?

Often times when I meditate I like to think about where I am physically. I feel that I, like most people, spend so much of my day lost in my own thoughts and perceptions that I forget where I am physically. So I like to see how far I can go to pinpoint where I am.

When I meditate, I’m usually on a cushion in the corner of my home office, which sits on the ground level of my house, which sits in a culdesac in the northwest corner of the city. This city is on the north side of a bend in the Mississippi River in Iowa, which is a little southeast to the center of North America. North America sits in the overlap of the northern and western hemispheres of Earth. Earth happens to be the 3rd planet from the Sun and is currently circling somewhere around it inside of the Milky Way Galaxy. At this point my astronomy fails me, but if you follow the current belief of astrophysicists, the Milky Way sits somewhere inside of an infinitely large universe.

So I don’t know exactly where I am right now. Things got a little blurry after we left Earth and I got completely lost after I left the Milky Way. Your exact location isn’t the important take-away from this exercise -
understanding that you’re somewhere within an infinitely large space is what’s important. From where you’re sitting reading this, space extends infinitely to your left, right, front, back, above, and below. You can’t possibly fathom how large infinity really is, but attempting to should be a very humbling experience.

After I’ve looked out as far into the cosmos as I can for my exact coordinates and have realized I’m completely lost, I turn that infinitely long gaze inward. I’ll pick an arbitary point as close as I can get to the center of my body – maybe my stomach. It’s located just south of my ribcage, above and behind my belly button. Inside of that is stomach lining, stomach acid, and the remins of my lunch. Inside of the stomach lining are millions of cells. Inside of one of those cells is a nucleus, mitochondria, et al. Those components are made up of atoms, which are made up of protons, neutrons, and electrons. We can look further yet, to the quantum level, and even further still to a level no scientist can observe or measure. In effect, we can go infinitely inside of ourselves.

The cool thing about infinity is that it’s too large for us to measure or even imagine. We just can’t do it. The universe is just as infinitely large as the space between our electrons is infinitely small. Somewhere between the infinite reach of inner and outer space is what you call you.

Before you go and think you now know where you exist in the universe, let’s take things a step further. When I set up the exercise of looking infinitely out into the universe and infinitely in, it’s easy to think there is some defining point or line between outer and inner space. But while you were reading this, maybe you were taking a drink of water or enjoying a snack. At the very least, you were breathing. All of those things involve you taking something from the outer space and bringing it in to your inner space. That breath of air filled with oxygen and dust and any number of other gases was inhaled into your lungs and was used to provide energy to your cells, affecting the space between your atoms, among other things. When you exhaled, you returned some of your inner space back into outer space, blurring that line through the universe in a process that will continue as long as you keep breathing.

So where are you?