Ingredients:
3 egg whites
5 cups powder sugar (confectioner's sugar or cane sugar)
flavored extract (optional)
water
parchment paper
1. Combine the powdered sugar with the egg whites a little at a time, and mix with a hand mixer for about 5 minutes.
2. You may add a teaspoon of flavored extract if you have it. I added almond extract.
(Royal icing is white; in this picture the yellow food coloring was already added)
3. The consistency of the icing should be like that of Elmer's glue. If it is too thick, add a little bit of water at time (about a tablespoon) until you reach the right consistency. If it is too thin, add more powdered sugar.
4. Separate the icing into smaller bowls and add food coloring.
6. Cut parchment paper into a perfect square, then cut into two equal triangles. Wrap parchment paper into a cone and fold inwards from the top of the cone to seal into place.
7. Fill parchment cone with icing, leaving about 3 inches room to fold and close off the cone from the top. If you overfill the cone, the icing will ooze out from the top when you squeeze it.
8. Pipe on outlines or designs onto your sugar cookie.
9. If you want to add sprinkles to your sugar cookie, pipe the design on your cookie, then add sprinkles.
10. Allow to dry completely. Wrap in clear plastic bags for party favors.