Toast the slice of bread and while it is hot, rub it all over with the cut clove of garlic. Mix together the two oils and pour a tablespoonful over the toast, then put it in the bottom of your salad bowl.
Make the rest of the oil into a dressing with the vinegar and seasoning. Wash and dry the salad and dress it just before serving, sprinkling in the chopped walnuts, if used. The cha