I'd never made beer-battered anything until the other day. I found this in The Dean & DeLuca Cookbook, p. 317. Couldn't find a link for the recipe but here are the ingredients and a paraphrase:
3/4 C AP flour
3/4 t salt
1/2 t pepper
1/4 C milk
3/4 c beer
1 T melted butter
Combine the dry ingredients in a bowl. Whisk the beer and egg into the milk in another bowl until smooth. Whisk the wet into the dry. Rest for an hour (you and the batter!) To cook, dry the fish well, salt, and lightly flour (this will help keep the batter on but you probably already knew that. A friend also suggested corn starch.). Dip in the batter and let excess drip off. Fry in 360 vegetable oil til golden brown.
This was so good. I'll be doing it again VERY soon.