Fluffy and ethereal, Swiss Meringue is a versatile confection made up of cooked egg whites and sugar that's whipped up. It's a bit like a spreadable marshmallow and perfect for pies, cakes or baked into little cookies.
Alternating between a whisk and a spatula is useful during the cooking stage because it helps ensure all of the sugar melts. Generally speaking the egg whites should be consistently whisked while they're being heated, but occasionally scrape down the sides of the bowl with a spatula to make sure the sugar granules that naturally go up the sides are pushed down to melt. If any sugar granules get stuck to the side of the bowl they could crystalize and create hard granules in your finished meringue.
Meringue is best used immediately. But it can be re-whipped if you need to make it slightly in advance and it has begun to deflate.
Find it online: https://everydaypie.com/swiss-meringue/