My favorite German Beer is the Schneider-Weisse Aventinus (Weizen Doppelbock). It is a BIG beer and has an awesome flavor. You will see several posts here on my blog about this beer. I’ve enjoyed a tour of the brewery, attended the Aventinus Festival in Kelheim, and generally have determined that it is definitely an A++ beer.

A Weizen Bock is a strong wheat ale. Weizen in German means “Wheat.” The term Bock is more nebulous but really, in this sense, means “Strong Ale.” Another meaning for Bock is “He Goat.” That’s why on most traditional bock beers, you will find the image of a Goat (or Ram). Here are a couple of examples:

However, on Weizen Bocks, the label usually references some historical figure or religious saint … in Schneider’s instance, it is Aventinus, a (local to Kelheim, Germany) historical figure. Aventinus is actually called a Doppelbock — meaning an extremely strong (over 8% ABV) beer.

From Schneider’s Aventinus beer comes the Aventinus “Eis-bock.” An “Eis-bock” is made from “freeze distillation” — a fermenting “wort” (in this instance the Aventinus beer) is frozen and the ice is removed. In this instance, to get to 12% for Aventinus Eis-bock, they remove approximately 31.6% of the water content.

If you’ve had a Weizen beer, you recognize that the flavors/aromas are typically a sweet malt character supported with Banana esters and Clove phenols. These are yeast derived characters that support the sweet malt character and make Weizens some of the tastiest of beers (in my opinion). Making it even stronger requires great balance and skill — something Schneider demonstrates time and again. Both of these beers are the best examples (see here) and that’s why I wanted to try and clone them.

To get the big beer I wanted in my current brew setup, I had to use some dry malt extract with my other grains. I used what I called a “fake decoction” process (a step mash really) and an open fermentation to try and match the ester/phenol character in the Weizen doppelbock. I think I hit it pretty well–ending up with an 8.7% beer. Then, I tried the freeze distillation — my target was to remove about 27.5% of the ice to get to that 12% ABV level. I was not patient enough and only removed about 8% of the ice … ending up with a 9.5% ABV “Eis-bock.”

Because I didn’t have any patron saint or historical figure in mind to name my beer after, I took the traditional meaning of Bock and a winter theme and came up with “Frosty Billy.” Here are the two beers compared side-by-side.

The one on the left is my Eis-Bock — the one on the right is the Aventinus. The middle, single glass is the Aventinus … so clear! Mine is the one on the right. Both have really good flavor. I can tell the Aventinus is aged — it has a great oxidized character of plums/raisins/molasses. So good! The flavor/alcohol are balanced nicely. The flavors are there in mine — since it’s only been in the bottle for a week or so it needs time. In another couple of months, it should really be entering its prime!

I really enjoyed making this beer … I’m hoping it will be my annual February Beer. We’ll see.

Beer Mentor