Mustard Vinaigrette

By James MacGuire

[Read James MacGuire’s article “French Winter Salads.”]

This French basic is seldom found in cookbooks, perhaps because it’s taken for granted. It adds a welcome richness but can overpower salads made with delicate greens, and the mustard’s bite makes it a waste to use expensive olive oil. Two musts are decent red-wine vinegar and hot Dijon mustard from …