If making batter by hand, blend the flour and eggs with a balloon whisk for best results, and add the liquid gradually. If lumps occur, pour the batter through a sieve. For a foolproof method, work all the ingredients together in an electric blender there should be no need to sieve.
After making batter by hand, pass it through a fine-meshed sieve to ensure smoothness.
For an ultra-smooth batter work the ingredients in an electric blender for 1 minute until smooth.