Step 1: In the bowl of a stand mixer, whisk together eggs, granulated sugar, and egg yolks by hand. Place bowl over a saucepan of simmering water. Cook, whisking occasionally, until an instant-read thermometer registers 110°F (43°C), about 5 minutes. We used the bain-marie method, a gentle heating of eggs and sugar over simmering water, to help the eggs whip up in dramatic fashion.
