Make the royal icing: In a large bowl, beat the egg whites and cream of tartar with an electric hand mixer until frothy. Gradually add the powdered sugar, 1 cup (120 grams) at a time, until the ...

Royal icing is a type of icing that uses stabilizers (such as egg whites, meringue powder, or cream of tartar) that allow it to harden, acting as a glue for homemade gingerbread houses.

If you want to decorate your cookies like ours here, when you’re preparing this icing, use the “6-second pull test” to determine if it is the correct consistency.

If using icing, you'll ice once baked. Bake at 300℉ in the center of the oven 8 to 10 minutes, or until golden. Let cool ...