Grouper Tacos in Lettuce Wraps

2 pounds grouper fish fillets
Cooking spray
Salt and pepper
1 lime
Hot sauce
Bib or green leaf lettuce leaves, for wrapping
1 jalapeno, seeded and chopped
1 cup cilantro leaves
3 sprigs fresh mint
3 tablespoons grainy mustard
2 tablespoons red wine vinegar
1/3 cup extra-virgin olive oil
1/2 red onion, finely chopped

Heat grill pan or nonstick skillet over high heat. Spray the pan with
cooking spray. Place fish on grill, season with salt and pepper and cook 5
minutes on each side, until opaque. Arrange lettuce leaves on a platter.
Place jalapeno in a food processor with cilantro, mint, mustard and
vinegar. Turn processor on and stream in oil. Season sauce with salt and
pepper. Take the fish off grill and place on a serving plate. Break the
fish into chunks and squeeze lime juice over fish. Add a few dashes hot
sauce to the fish. Pile fish in lettuce leaves and top with sauce and
chopped red onions.