Coffee-Marinated Skirt Steak

• 1 small shallot, chopped
• 2 garlic cloves, chopped
• 1 cup strong coffee, room temperature
• 1/4 cup balsamic vinegar
• 1/4 cup Dijon mustard
• 1/4 cup (packed) light brown sugar
• 2 tablespoons olive oil
• 1 teaspoon freshly ground black pepper plus more
• 1 1/2 pounds skirt steak, cut into 4 pieces
• Kosher salt

1. Whisk shallot, garlic, coffee, vinegar, mustard, brown sugar, oil, and 1 teaspoon pepper in a medium bowl. Pour half of marinade into a resealable plastic bag. Add steak, seal bag, and turn to coat. Let sit at room temperature 1 hour. Cover remaining marinade and set aside.
2. Prepare grill for medium-high heat. Remove steak from marinade; discard used marinade. Season steak with salt and pepper and grill, turning and basting often with reserved marinade, 8-10 minutes for medium-rare. Let rest 10 minutes before slicing.
3. DO AHEAD:

shallot, garlic, coffee, balsamic vinegar, dijon mustard, light brown sugar, olive oil, freshly ground black pepper, skirt steak, kosher salt

Taken from www.epicurious.com/recipes/food/views/coffee-marinated-skirt-steak-51178610 (may not work)