Beef with mint

1 lb sirloin steak 3 tablespoons lime juice 1 tablespoon fish sauce 1 tablespoon soy sauce 1 teaspoon sugar 1/2 teaspoon chili paste or 1/2 teaspoon crushed[...]

2 tablespoons oil 1 onion , diced 2 tablespoons curry paste , mild Indian curry paste 500 g beef , diced 420 g condensed vegetable beef soup 500 ml water 2[...]