How to Make French Vinaigrette

One assumption that I'm going to make about the French is that they're not afraid to make things au pif, or "by the nose".

I don't know if a precise recipe for sauce vinaigrette actually exists. But if there is, I bet few people follow it very closely. And Romain is no different from his compatriots when it comes to recipes, and rules.

They are both for other people—and don't apply to him.

Vinaigrette is just one of those things. It's a few simple ingredients which come...