These tomatoes grow wild on La Palma, and they’re about the size of marbles. The locals call them tomates bicacaros and don’t think much of them, perhaps because people used to eat them when they couldn’t afford anything else. I believe that the only reason they don’t sell for some daft price is that they’ve got very thin skins, so they don’t keep. I have some in my garden, and I pick them just before we’re going to eat salad, add a little dressing, and watch my son happily eat his vitamins.