Egg Whites Won’t Whip

This could be because of residual oil in the bowl or on the beaters, or because a little egg yolk slipped in when separating the eggs. Fat is the enemy of volume in egg whites, so to ensure that no oil effects your whites, slightly dampen a cloth with white vinegar and wipe your bowl and beaters with it before adding the whites. (If you have already begun beating, notice the whites aren’t whipping, and believe oil is the culprit, it’s best to start again with a clean bowl and new egg whites). Another reason whites won’t whip is because they are cold. Room-temperature egg whites are flexible and stretch to a fuller volume than cold egg whites, so just wait for your egg whites to warm up a bit.