4 Servings 25 min Cook
2 Tbsp Adobo Fresco
4 Muffin English Muffins
1 Tsp Salt
1 Lb Ground Beef
1/2 Cup, chopped Onions
Prepare grill for cooking over medium-hot charcoal (moderate heat for gas); see "Grilling Procedure," below.
Meanwhile, open any whole chipotles and discard seeds, then mince chipotles.
Mix chipotles (with sauce), beef, onion, and salt with your hands, then form mixture into 4 (3/4-inch-thick) patties.
Separate beef equally into four burger patties.
Grill burgers on lightly oiled grill rack, covered only if using gas grill, turning over once, 4 minutes total for medium-rare.
Grill English muffins, cut sides down, until grill marks appear, about 30 seconds.
Serve burgers in English muffins.
Grilling Procedure If using a charcoal grill, open vents on bottom of grill, then light charcoal.
When charcoal turns grayish white (about 15 minutes from lighting), hold your hand 5 inches above grill rack to determine heat for charcoal as follows:
Hot: When you can hold your hand there for 1 to 2 seconds
Medium-hot: 3 to 4 seconds
Low: 5 to 6 seconds
If using a gas grill, preheat burners on high, covered, 10 minutes, then, if necessary, reduce to heat specified in recipe.
