Ingredients
1/2 tablespoon cumin, ground1/2 teaspoon coriander, ground1/2 teaspoon chili powder1/4 teaspoon salt3/4 teaspoon pepper, black, coarsely ground1 pound beef, boneless top sirloin steak trimmed of fat3 cloves garlic, peeled, 1 halved and 2 minced3 teaspoons oil, canola divided (or olive oil)2 medium peppers, red, bell thinly sliced1 medium onion, white halved lengthwise and thinly sliced1 teaspoon sugar, brown1/2 cups coffee, brewed or prepared instant coffee1/4 cup vinegar, balsamic4 cups watercress