Beef with grapes

4 medium red potatoes, each cut into 8 wedges 1/4 cup water 1/2 red onion , thinly sliced 1 lb roast beef 1 pint grape tomatoes , cut in half lengthwise 9[...]

12 pieces beef short ribs salt and pepper 2 tablespoons extra virgin olive oil 1 (750 ml) bottle dry red wine 1 lb small onion , peeled 1 1/2 tablespoons[...]