Royal Icing

Directions

1. 1
   In a medium bowl, beat the egg white at medium speed until foamy.
2. 2
   Add the confectioners' sugar, 1 cup at a time, beating between additions, until the sugar is completely incorporated.
3. 3
   Add the water and beat at high speed until the icing holds its shape, about 5 minutes.
4. 4
   Spoon the icing into a piping bag fitted with a plain tip and use at once; thin with water if necessary.