Two Classics: Hollandaise Sauce and Béarnaise Sauce
The following recipes come from Julia Child’s Julia’s Kitchen Wisdom. Much of what makes French cooking so French is the sauces. Hollandaise is The Classic; Béarnaise is a variant that adds additional flavor suitable for beef, lamb, or shellfish.
Hollandaise Sauce
3 egg yolks
big pinch of salt
1 tablespoon lemon juice
2 tablespoons cold unsalted butter
2 sticks unsalted butter, [...]