Mussels with leeks, white wine and white beer

Ingredients

• Olive oil
• 2 cups leeks, sliced
• 3 garlic cloves, finely chopped
• 1/4 cup white wine
• 2 tomatoes, cut in cubes
• 1 orange bell pepper, cut in cubes
• Salt and ground pepper
• 1/2 cup Blanche de Chambly beer from Unibroue, lukewarm
• 2/3 cup Pecorino Romano cheese, grated
• 1kg Quebec mussels, washed and debearded
• 2/3 cup fresh parsley, chopped