I actually really like the canning jar idea, CRoth. Everything is easily sterilized and I have canning jars kicking around. I may do 2 of them (mine are pint size). I think I'll go with 3-4 oz in each. I don't want an over-bearing coffee flavor, but it is a mocha stout, so it should be somewhat forward.
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On Tap: Any Day Session IPA
Primary 1: Hopamania (aka Hop Hogan) IIPA
Primary 2: Dolph 2014 Imperial Stout
Primary 3: "Strong, Dark & Stoopid 2014" Belgian Dark Strong
Primary 4: "Cirrhosis" 20% Barleywine
Primary 5: Apricot Cascade Blonde Ale
Secondary 1: Lambic-Style Sour Ale
Secondary 2: Empty