Add a little vinegar to the water before you put the egg in. This will keep your eggs looking much more uniform.
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Boerderij_Kabouter
Another good tip is to use espresso cups to hold the eggs. WHen you are ready to cook them, lower the espresso cup into the water until the egg floats. Then pull the cup out from under. Make sure to have enough water that the temp doesn't drop too much.
