How to Make Marshmallows

While the sugar syrup is boiling and the gelatin is softening, place the room temperature egg whites in the clean bowl of a large stand mixer fitted with the whisk attachment. Once the sugar syrup nears 245 degrees, begin to beat the egg whites. Beat them until they hold firm peaks, but do not overbeat or they will be crumbly. If the egg whites are ready before the sugar syrup reaches the correct temperature, stop the mixer until the sugar syrup is ready.