Royal Icing recipe:
1 pound of confectionery sugar
1/4 teaspoon cream of tartar
3 egg whites
Beat slowly until stiff peaks form. Put icing in a pastry bag or a plastic bag with a hole cut in the bottom corner, which can serve as a pastry bag.
Use the icing to glue five graham crackers together (four walls and a roof), and allow to harden. Then use remaining icing to attach candy decorations.
Source: Historic Hotels of America press release. Historic Hotels of America is a program of the National Trust for Historic Preservation.
Need Gingerbread House inspiration? View these amazing photos of the winning creations at the Boston Christmas Festival Gingerbread House Competition from 2011, 2009 or 2008.

