In Michael Craig-Martin's hands an omelette could, conceptually, be anything. If the primacy of the artist's intention can make a glass of water An Oak Tree, as he maintained amid no little controversy in 1974, then an omelette can be anything he wants it to be. Or, indeed, anything the generations of YBAs he taught at Goldsmiths want it to be (although in their case it would often be an omelette for Charles Saatchi). It's also the kind of everyday object that could one of his boldly outlined still-life pictures painted in ultra-vivid colours. In this case, more prosaically, what it actually is, is lunch. Additionally, it is also just about the only thing he knows how to cook.
3 large free-range eggs
5 to 6 small cherry tomatoes
knob of butter
Blend the eggs lightly with a fork adding the salt, pepper and Parmesan. Chop the onion, but not too small, and cook in olive oil till transparent. Place in a bowl. Slice the tomatoes in half and cook in olive oil until soft and mushy. Mix the tomatoes and onion together. Heat the butter in a small frying pan until hot. Pour in the eggs. As they cook, use a wooden spoon to pull the mixture from the edges to the centre, letting uncooked egg spill to the edge. When only a small amount of liquid egg remains add some, but not all, of the onion and tomato mixture. Fold the omelette in half, but do not roll. Turn if necessary. Slide onto a plate and add the remaining onion and tomato along the open side. Season with salt and pepper.