For the Filling: Combine egg whites, sugar, salt, and cream of tartar in the bowl of a stand mixer. Place bowl over the water bath so it sits on the foil ring (the bowl should not touch the water). Cook, stirring and scraping continuously with a flexible spatula, until egg white mixture reaches 165°F (74°C). This should take about 6 minutes in a metal bowl; if it takes substantially longer, it simply means the heat is too low. If the mixture cooks too fast, or scrambles despite constant stirring, this indicates that the water has come to a boil, or that the water is able to touch the bowl.
Published at Thu, 06 Sep 2018 12:58:39 +0000