Whisk it good.

Read more: How to Make Vinaigrette Without a Recipe on Food52.

This is a nightly occurrence in my house, depending on my mood I switch out whole grain mustard for dijon, maple syrup for honey, fresh lime for lemon.  There are endless combinations to be made, and no matter how much work I put into whatever my main dish is, the salad and the dressing always get the most compliments.  Give it a try, and you will soon realize there is little reason to purchase pre-made (often with loads of sugar, high fructose corn syrup, and salt) dressing ever again.