Firecracker Burgers with Cooling Lime Sauce

Directions:

1. Combine ground beef and seasoning ingredients in large bowl, mixing lightly but thoroughly.
2. Shape into six 1/2-inch thick patties.
3. Place patties on grid over medium, ash-covered coals.
4. Grill, covered, 8 to 10 minutes (over medium heat on preheated gas grill, 7 to 9 minutes) until instant-read thermometer inserted horizontally into center registers 160°F, turning occasionally.
5. Meanwhile combine sauce ingredients in small bowl; set aside.
6. Spread sauce on cut sides of rolls. Place one burger on bottom half of each roll; top evenly with watercress.
7. Close sandwiches and enjoy.