1. Hard boil, peel then slice eggs in half the long way. 2. Remove the cooked yolk and place in a side bowl. 3. In small bowls, add hot water, a few drops of vinegar and food coloring. 4. Drop in eggs for at least 15 minutes. 5. Pull eggs out with a slotted spoon and lay on paper towels to drain. 6. Once air dried, fill with your colored egg with a deviled yolk mixture.