Mix liquids first including melted butter or oil.

Add eggs.

Add flour last.

If wisking or blending by hand then mix for 3 minutes until smooth. If making in blender or food processor mix for 1 minute on high speed.

Stop and scrape down sides.

Blend smooth, 30 seconds to 1 minute

Use batter immediately if made in processor or blender, let rest for 1 hour if hand mixed. Use within 24 hours.