Put shallot into mixer bowl, chop for 3 sec/speed 6/MC on. Scrape bowl down and repeat.
Insert butterfly and add white wine vinegar, dijon mustard, salt and black pepper to mixer bowl. Set mixer to 2 min/speed 3/MC off and VERY slowly start drizzling oil in to mixer bowl.
Notes
Makes a single portion of salad dressing for a large salad (10+ persons), or two medium portions.Store in a sterilised glass jar for up to two weeks in the fridge.