1Be sure that all cartilage has been removed from crab meat. Beat egg yolks until thick. Fold in crab meat. Heat butter, add onion and saute over low heat for 10 minutes or until lightly browned.
Stir in crab meat and add lemon juice, dry mustard, salt and pepper.
2Beat egg whites until stiff but not dry. Fold into crab meat mixture. (at this point I like to add a small amount of bread crumb to the mix for extra body, but this is optional).
3Pan fry spoonfuls in hot butter in skillet. Brown evenly on all sides. Serve.