To make the soufflé base

Whisk together the egg yolks and sugar in a stainless steel bowl. Stir the flour and the salt into the egg mixture.

Bring to a boil a pot of water that is large enough to hold the stainless steel bowl so that it sits halfway down in the pot.

Scald the milk with the vanilla bean in a heavy-bottomed saucepot. Whisk the