Fritter Batter

Directions

1. 1
   Combine yolks with oil and beer.
2. 2
   Gradually stir this into flour (it should be thick enough to stick to the food) and beat until very smooth with a few swift strokes.
3. 3
   Rest batter, covered, in refrigerator for 3 hours at least so it ferments a bit.
4. 4
   Get oil to right temperature.
5. 5
   Beat egg whites until stiff and fold into batter.
6. 6
   Dip the onions or mushrooms in the batter and fry.