Whip the heavy cream to stiff peaks, about 2–3 minutes, being careful not to overwhip. Cover and refrigerate until ready to use.
Gently melt the white chocolate (microwave in 20-second bursts or over a double boiler), stirring until smooth. Let cool 5–10 minutes until just warm to the touch.
In the bowl of a stand mixer fitted with the whisk attachment, beat the egg yolks and sugar on medium-high speed until pale, thick, and tripled in volume, about 3–4 minutes.
With the mixer running on low, add the warm white chocolate and mix until fully combined. The mixture will thicken noticeably—this is expected.
Whisk in a small scoop of the whipped cream to loosen the chocolate mixture until smooth.
Quickly but gently fold the chocolate mixture into the remaining whipped cream just until no streaks remain.
Spoon or pipe immediately into serving dishes. Chill at least 30 minutes before serving.
Video
Notes
Technique: Chocolate should feel warm—not hot.
Flavor Tips: Use real white chocolate made from cocoa butter.