medium tomatoes, seeded and finely chopped • small red onion, peeled and finely chopped • garlic, minced • roughly chopped cilantro • mayonnaise • sour cream • limes, 1 halved and 1 cut into wedges • flour, preferably spelt or other fine-milled flour • chili powder • eggs • flounder or any firm white-fleshed fish • shredded green cabbage •