This is the Secret Ingredient Grandma Used for Her Coffee

If you’re using the shell, wash the outside of the egg before cracking it, particularly if the egg came from a source where the shell hasn’t already been cleaned.

The shell is traditionally part of the mixture, so cleanliness matters.

Step 2: Bring the Water to a Boil

Pour 3 cups of water into a saucepan and bring it to a boil.

Once the water is bubbling steadily, carefully add the coffee-and-egg mixture.

It may foam up and look rather unusual.

That’s completely normal.

Give it a gentle stir if

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