These Easter eggs were dyed completely naturally, using a head of purple cabbage. The color of the cabbage leaves and the dye they generate is purple, but the eggs come out blue! It is a fun project for the kids and using cabbage is cheaper than using blueberries for the same purpose. The longer the eggs sit in the dye, the more intense their color becomes. I let mine sit overnight.
White eggs, 1 head purple cabbage, 2 tablespoons vinegar, 1 tablespoon salt (prevents cracking)
Chop the cabbage and put the leaves in a a pot. Cover with 6 cups of water. Bring to boil, simmer for 10 minutes. Add salt and vinegar. Take off the heat and cool.
Put the eggs in the resulting purple water with the cabbage leaves. Bring to a boil again and simmer for 5 minutes. Take off the heat and leave the eggs in the purple liquid until the eggs turn your desired color. Two hours to overnight is a good time. Periodically mix the eggs and the leaves gently in order to create a pretty marble pattern.