This simple, flavorful vinaigrette from chef Michel Roux's "Sauces" cookbook will quickly become your go-to salad dressing.Also Try: Roquefort Vinaigrette, Tomato Vinaigrette
Place mustard in a medium bowl; season with salt and pepper and whisk to combine. Slowly whisk in vinegar.
Whisk in oil in a slow, steady stream until emulsified. Season with salt and pepper and add a splash or two of vinegar if necessary. Vinaigrette may be kept in an airtight container, refrigerated, for up to 1 week.