Dark beer marinated beef flank steak - Le Coup de Grâce

Ingredients

• 2 beef flank steaks, about 250 g each
• 1/2 cup of brown beer from the Milles-Îles microbrewery
• 3 tbsp. maple syrup
• 2 tbsp. soy sauce
• 1 tbsp. Bas-du-Fleuve salted herbs
• 1 tbsp. olive oil
• 1 tsp. dried oregano
• juice of 1/2 lime
• 2 green onions, sliced
• 2 large cloves of garlic, finely chopped
• Salt and pepper from the mill