1/6 barrel one way keg (5.2 Gallons) to so after use just collapse and recycle. Worthy of a cheers at the next Little League game. A glass of Rare Brew Pilsner should do just fine. Refreshing like your favorite beer with a lighter touch this pilsner tea really is worth the stubborn grass stains.. High Caffeine INGREDIENTS: carbonated water green tea blend hops and honeybush.