In a large dutch oven or stock pot, melt the lard over medium high heat.
Combine the beer and egg in a large mixing bowl.
Add the flour, baking powder, salt, pepper, and onion powder. Stir to combine into a thick wet batter.
Pour 1 cup of flour into a small mixing bowl.
Once the lard has reached 375℉, dip the onion slices, one at a time into the flour mixture and then the batter.
Fry as many as you can without overcrowding the pot. Each ring will take about 3-4 minutes per side. Once golden brown, remove from the oil and allow the oil to drain on a paper towel lined plate.