Don't let them get warm, 40 degrees or colder till3-4 hrs before use.It depends on how you are going to serve it, pinic pumps cold plate or direct draw system. Garbage cans worh well. about 180-12oz glass to a 1/2 barrel,15.75 gal in the kind you are using. The foam thing can depend on how you are dispense it. Would need to know more.
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L. Tapper
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