My step daughter and her boyfriend taught me this one. It's great to serve anytime but especially when serving mexican food. Basically I take a bottle of fine tequila. I like Patron Silver. You take two or three habanero peppers, cut the tops off and toss them in the bottle to steep. It's best to wait a couple of days to allow the flavor and hotness to permeate the tequila. You then use your favorite recipe to make a margarita. I like to use Grand Marnier. This stuff can be hot but is very tasty.