Wash mushrooms and trim stems, but do not completely remove all of the stem. Heat oil in a deep fryer, such as a "Fry-Daddy" or deep skillet with enough oil to cover.

Use either commercial "Mushroom Batter" mix or a mix like Bisquik for the batter. Mix the batter according to package directions, except use beer as liquid instead of water or milk.

Deep-fat fry the 'shrooms, until golden brown and drain on paper towels.