Three parts extra virgin olive oil to one part of vinegar or lemon juice. You
can also add a small amount of salt and pepper, a teaspoon of mustard powder, a
little sugar, or a dash of cream for a richer dressing, or some water for a
lighter one. Try variations of this until you find what suits your taste. You
make it by adding all the ingredients to a small jar and shaking it. Dress the
salad just before serving.