My two favourite oils for dressing salads are extra virgin olive oil and walnut oil. I like to mix these with a variety of acids, the most popular being balsamic, red wine, sherry and cider vinegar, verjuice and fresh lime and lemon juice. Generally, a mix of three parts oil to one part acid is about right, but it will depend on the strength of the acid used, so always take a little taste from both the oil and the acid before mixing, to get an idea of their strength and to see how they will balance. Don’t forget to season with sea salt and freshly ground pepper.