Three Ingredients Cookery

Of late, I have been very interested in a challenge to make foods from only three ingredients. In the strictest interpretation, this should include any oil used in cooking, but I am willing to make some allowances that way. Also, I will not include in the set of three ingredients water if used to boil, simmer, or steam some element, or something like a pickling agent. So, for example, new potatoes, olives, and olive oil in my looser interpretation counts as three ingredients, although the potatoes are first boiled and then fried in oil, and the olives must go through a series of preparations before they are canned... I don't perform those processes, I just open the can and drain and chop, then put the olives in to fry.