Keep the heat high while simmering and cook the fish by enveloping it in the bubbling sauce. Remove the fish while fluffy, reduce the sauce further and pour it over the fish. The flavor won't have ...

The single most nerve-racking thing about making this simple, elegant custard sauce is that it can overcook ... moderately low heat just until small bubbles appear around the rim, about 5 minutes.

Use a deep pan to avoid bubbling over. Resist the temptation to stir the mixture so you avoid the sugar splashing up the sides of the pan (this will result in a grainy sauce). Instead, hold the ...