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Mix the dry ingredients together in a mixing bowl. In a separate dish, beat together the egg, beer, and buttermilk until frothy. Add egg mixture to dry ingredients and blend until batter thickens. Wait 5 more minutes for the batter to set up, if necessary.
Skewer hot dogs. Heat oil to 350F.
Pour batter mix into a tall glass. Take 1/2 cup of flour and scatter onto a plate.
Roll hot dogs in flour and then dunk one dog at a time into batter mix, swirl, lift and let excess batter drip off back into the glass. (Although not in the video, this great reader tip points out that the pre-coating of flour before dunking the dog into the batter will help the batter to better hold to the hot dog).
Lay the battered dogs (just a few at a time) down into the oil and turn until they are golden brown. If you have a deep fryer with a basket, this would be a good time to pull it out. Remove cooked dogs and drain on paper towels.
Dip with some German-style mustard and enjoy with…well, I think just about any beer will do with this treat!
How To Make Beer-Battered Corn Dogs