Here's an easy hack you can use to harvest the egg yolk. It's super easy and takes no time. To get an egg yolk by itself, you can use an empty water bottle! Crack your eggs into a bowl. Make sure the water bottle is clean first, then lightly squeeze the bottle - just a little bit - and place the opening over the egg yolk. Release the bottle and the egg yolk will get sucked up into the bottle all by itself!