Grilled Skirt Steak with Chimichurri

INGREDIENTS

• 1 cup fresh flat-leaf parsley leaves
• 1 cup fresh cilantro leaves
• 3 Tbs. fresh marjoram leaves
• 4 garlic cloves
• Sea salt and freshly cracked black pepper, to taste
• 3 Tbs. Champagne vinegar
• 1/2 cup olive oil, plus more for brushing
• 1/2 red bell pepper, roasted, peeled, seeded and finely diced
• 1 Tbs. red pepper flakes (optional)
• 1 1/2 lb. skirt steak