Whip up a batch of Heavenly Homemade Marshmallow Cream in just 25 minutes! This fluffy, glossy recipe is perfect for dipping, topping, or eating by the spoonful.
Stir together the sugar, light corn syrup, water, and salt in a small saucepan over high heat. Boil, stirring occasionally, until it reaches 240 degrees.
Place the egg whites and cream of tartar in the bowl of an electric mixer fitted with the whisk attachment. Start whipping the egg whites to soft peaks on medium speed.
When the syrup is reaches 240 degrees F, set the mixer to low and slowly drizzle a tiny bit of syrup, a couple tablespoons' worth, into the egg whites to warm them. (If you add too much syrup at once, the whites will scramble.) Slowly drizzle in the rest of the syrup and then increase the speed to medium-high. Beat until the marshmallow cream is stiff and glossy, 7 to 9 minutes; toward the end of the beating time, beat in the vanilla. Use immediately or store in an airtight container in the refrigerator for up to 2 weeks.