This comment has to do with Mike's podcast on pine needles and expresso machines. In his reference to alcohol, water mixtures. Vodka etc. is measured in Proof. Proof is twice the rate of percentage. So 80 proof vodka is actually 40% alcohol the rest in the bottle is water. I don't think Mike was taking this into account. So with the recipe for the expesso machine your suppose to use 30% alcohol that would be 60 proof. Mike if your read this please correct me if I am wrong.