I looked through the recipes for stuffed eggs, I didn’t find this. This recipe is economical. I’ve tried a lot of stuffed eggs with different fillings, but I like this one with a piquant note the most, try it!
Grind the yolks. Chop the onion very finely, fry in vegetable oil. Remove excess oil from the onion. Mix yolks, onion, mustard, salt, and season with mayonnaise.