Swiss meringue is a thick, marshmallow-like confection that can be baked in shapes, used as a base for buttercream, it even makes a handy dessert topping. It holds well, pipes beautifully and since it’s pre-heated before it’s even whipped, carries little (if any) risk of food borne illness. Did I mention it’s really, really easy to make too?
One of the basic rules of meringues is that the earlier you add the sugar the denser and more stable the meringue will be. With Swiss meringue the sugar is combined with the egg whites in the very first step, so you can draw your own conclusions. A basic recipe is:
4 egg whites
7 ounces (1 cup) sugar
1/4 teaspoon cream of tartar
Set a medium saucepan with 1 inch of water on the boil. Meanwhile, place your whites, sugar and cream of tartar in the bowl of your mixer.
Whisk all that together, then put the mixer bowl into/on the saucepan, making a sort of improvised double boiler (make sure it’s stable, K?).
Now all you’re going to do is whisk all that gently until it reaches 160 degrees Fahrenheit. That’s not especially hot and it won’t take long. I personally like to whisk gently with one hand while I hold a instant-read thermometer in the mixture with the other. But don’t do this if, you know, you think you might tip everything on top of yourself. Even the best meringue isn’t worth a scalded crotch, knowadimean?
What’s so special about 160 degrees Fahrenheit? It’s the temperature at which salmonella (and many other kinds of bacteria) are killed. Some of you who’ve been reading the blog for a while may remember that egg white proteins start to curdle at 140 degrees Fahrenheit, and might be wondering what’s keeping them from cooking here. The answer is it’s the sugar, which is not only absorbing heat, it’s getting between the proteins and helping to keep them from clumping.
Once the magic number is reached, just put the bowl on the mixer, attach the whip and whip the whole thing up to stiff peaks. It’ll take a little longer than other meringues, and again that’s because of all the sugar. Bubbles are slow to form in this sweet mixture and when they do are very small, so be patient. It’ll take a good 5-8 minutes of whipping on high. Done!