#21) Brandy - If you are a Wisconsinite and brandy does not make the 30 Essentials list, they should run you out of the state on a rail. Korbel is what we drink in the state and it is about as ubiquitous as Miller Lite. While I have no problem with Korbel (we have three bottles of various sizes here), we have a number of others in the Lounge.
#20) Crème de Menthe - I believe I have had the same bottle of crème de menthe since Winterfest IV. Like chocolate and peach, a little mint goes a long way. Unfortunately, Wisconsin's mint palate since the 1970s has been dominated by peppermint and menthol schnapps, both of which are virtually unmixable. Not so with crème de menthe which has been employed and enjoyed in the U.S. since the 1800s.