Little Thistle Brewing is a 10 barrel (bbl) brewing system. What does that mean? There are 31 gallons in one barrel of beer, which translates to roughly 310 gallons per batch of beer, give or take the angel’s share. There are two 20-barrel fermentation tanks and four 10-barrel fermentation tanks. This system will allow us have the capability to keep our fast-selling, popular beers in supply as well as the flexibility and freedom to brew unique, experimental and seasonal beer styles.