1/3 cup apple-cider vinegar with the “mother” (such as Braggs brand)
1/2 cup cold pressed olive oil or flax seed oil
1/2 tsp. dry mustard
5-6 drops liquid stevia (or to taste)
salt and pepper to taste
Whisk all together in a bowl. This will keep in the fridge several weeks, however the oil may harden a bit. If so, let it come to room temperature and whisk again.