Note: When making aioli from scratch there is a risk that the aioli could split. If this happens it is completely fixable. You will know the aioli is split if it becomes very runny and oily. To fix a broken aioli add a fresh egg yolk to a clean bowl. Start by whisking the egg yolk and then slowly drizzle the broken aioli into the egg yolk until it is all added. In essence, you are treating the broken aioli as if it is the olive oil. I have found this to be a foolproof method for fixing a broken aioli!