Ingredients: For the beef: 1 pound well-marbled tri-tip, sliced against the grain to 1/4-inch thickness 2 large garlic cloves 1 shallot 1 tablespoon dark brown sugar 1 tablespoon fish sauce 1 tablespoon Mirin 1 tablespoon light soy sauce 2 tablespoons canola oil For the sandwich: 4 LFrenc…