How is a vinaigrette made?
Vinaigrette
In general, vinaigrette consists of 3 parts of oil to 1 part of vinegar whisked into an emulsion. Salt and pepper are often added. Herbs and shallots are added, especially when it is used for cooked vegetables or grains.  Sometimes mustard is used as an emulsifier[3] and to add flavour. Some vinaigrettes use a small amount of sweetener, such as maple syrup.