In my refrigerator, I found an "empty" bottle of Dijon mustard. "Empty", meaning you can't get it all without the addition of liquid. Enter vinegar, in this case, red wine vinegar.
I actually got the idea for using mustard in a salad dressing from the French. And you know, they got that food thing going on. The French often add mustard to salad dressings. If you to make something else with mustard, check out Serious Eats.
This is simple and it's a no recipe, recipe. Add a couple of tablespoons of vinegar to the mustard. Put the top on and shake it up. A kid will come in handy for this part. Once it's mixed, add a little olive oil, one or two tablespoons should do it. Add salt and freshly ground black pepper. You can also dress this up with parsley, chives, shallots, or not. You decide. It's okay to store this in the refrigerator for a few days. Allow to come to room temperature before using.
I used my dressing on boiled potatoes. But don't be limited to potatoes, use green beans, green salad, asparagus. It would even be good a broiled salmon. Give it a try and you will never toss an "empty" mustard jar again.
