1Prepare the eggs.

You can use either hard-boiled eggs or empty intact eggshells.

• Hard-boiled eggs - let the boiled eggs cool to room temperature.
• Empty intact eggshells - follow our instructions for blowing out eggs. Make sure the empty eggshells are clean and dry.

2Make the first batch of dye.

Make the first batch of egg dye by mixing together ¾ cup warm water, 1 tablespoon white vinegar, and about 10 drops of food coloring. This dye should be a lighter color than the second batch of dye that you will mix later.

3Place an egg into the dye.

Carefully place an egg into the dye, making sure it is fully submerged. Let it sit for at least 5 minutes. The longer it stays, the deeper and brighter the color will be.

4Remove the egg.

Remove the egg from the dye and let it air dry.

5Make the second batch of dye.

In a shallow bowl, mix the second batch of egg dye. Just like the first batch, mix ¾ cup warm water, 1 tablespoon vinegar, and about 10 drops of food coloring.

Add 1-2 tablespoons of vegetable oil to the mixture. Break up the oil with a spoon.

6Roll the egg around the dye.

Once the egg is completely dry, place it into the second batch of dye. Roll the egg once around the dye. The food coloring only dissolves in the water and not in the oil. Thus the surface of the egg that touches the oil will not collect any dye while those that touch the water will absorb color, creating the marbleized effect. If you want more of the egg's original color to show through, add more vegetable oil to the dye.

You can also spoon over some dye onto the egg to get a different effect.

7Let the egg dry.

Let the egg dry completely. If you wish, you can dip the egg again into another color of oily dye (same as in Step 5 and 6) to achieve a tri-colored egg. Have fun experimenting!