If you bake a lot, you may find that you often have to use more egg whites than whole eggs, leaving you with yolks.
Here are some ways yo use them up.
Home made mayonnaise
Home made pasta
Glaze for various baked goods
Add to scrambled egg/omelette/quiche mix
Add one to your dog’s bowl for a healthy shine on coat (don’t do this too often)
Freeze yolks in a freezer bag for future use.