True French Vinaigrette

“Okay I hate store bought dressings. Maybe all of them. Except this one! The story begins ages ago, when my mom would grocery shop for my Type 1 diabetic grandmother. As more and more salad dressings contained added sugar, this one didn’t! So it was a household staple from then on. But it’s actually… just so good?!? We would also mix this, Dijon, and sour cream for a dip for steamed artichokes. I will special order it as long as they sell it.”