|Firestone Union System|
Firestone uses their version of the Burton Union system for fermenting, which they call the Firestone Union. The Burton Union system is described as follows by Brew Your Own (original article located here):
The Firestone Union system is different, in that it is simply a stack of oak barrels that are not interconnected and are used only for secondary fermentation (conditioning), not primary fermentation (except for one beer - Double Barrel Ale - DBA, which goes through primary and secondary fermentation). This system still creates a unique beer to Firestone which is some of the best beer in the world.
Traditionally, a union system (later referred to as a Burton Union after becoming linked to its use in the Burton area) is a network of several wooden casks and troughs interconnected via copper plumbing. All of the casks work in union during fermentation, commingling their beer and yeast. As the beer ferments, pressure pushes some liquid up into long troughs above the casks (like blowoff in a homebrew setup), where the yeast settles out of suspension and the remaining volume of beer trickles back into the casks. This allows for easy harvesting of yeast — essentially a form of top cropping — for immediate reuse. It also minimizes the loss of beer through blowoff.
Me - with the Firestone Union System
|Looking down into the brewery from the brewhouse platform.|
|Mash Tun - raking the mash.|
|Boil kettle - wort is being recirculated through the top and sprayed out the top under the pan.|
|My wife with the kegging line|
|The brew house|
|Firestone Walker Tap Room|
|Enjoying a Porter at the adjoining Firestone Walker Restaurant.|