Coffee Rubbed Flank Steak

Ingredients

• 2 tablespoons instant coffee (or finely ground dark-roast )
• 1 tablespoon chile powder
• 1 tablespoon smoked paprika
• 1 tablespoon sea salt (coarse grain)
• 1 teaspoon cumin
• 1 teaspoon coriander
• 1 teaspoon onion powder
• 1 teaspoon garlic powder
• 1 teaspoon dark brown cane sugar
• 2 pounds flank steak