This recipe makes 4 cups of icing, perfect for a batch or two of cookies (especially the gingerbread variety, but we won’t judge if you use it on anything else!).
Beat the powdered sugar, milk and egg whites with a mixer in a large bowl until thick and glossy. Add more powdered sugar if the icing seems too thin (the size of the eggs can affect consistency). Just play with it until it’s right. The icing should be stiff enough to “stand still” when piped and not run.
Food Network Kitchens suggest caution in consuming raw and lightly cooked eggs due to the risk of Salmonella or other food-borne illness. To reduce this risk, we recommend you use only fresh, properly refrigerated, clean, grade A or AA eggs with intact shells and avoid contact between the yolks or whites and the shell. For recipes that call for eggs that are raw or undercooked when the dish is served, use shell eggs that have been treated to destroy Salmonella, by pasteurization or another approved method.