What can I use if I don't have meringue powder?
Home bakers have found success substituting meringue powder with a mixture of powdered gelatin—use three tablespoons of warm water combined with one tablespoon of gelatin powder to replace two teaspoons of meringue powder.
Is royal icing mix the same as meringue powder?
Meringue powder takes the place of raw egg whites, which is found in traditional royal icing recipes. Both create a very sturdy and stable icing that hardens quickly on top of cookies. Meringue powder, while containing eggs, eliminates the need for raw fresh eggs, but still provides the EXACT same consistency.