Mussels with beer and Piri-Piri

Ingredients

• 2-1/2 kg of fresh mussels
• 1 onion, chopped
• 2 green onions, chopped
• 4 tbsp butter
• 2 tbsp olive oil
• 1 chorizo sausage, chopped
• 5-6 garlic cloves, chopped
• 2 cups of chicken broth
• 2 cups of beer (We used one from Trou du diable – “Une blonde pour Lovecraft”)
• 1 tsp chili paste (chopped dried chili will also work)
• 1/2 cup Piri-Piri medium sauce from Casa Das Tias (you can use the hot one if you want it to be more spicy)
• 1 tsp saffron
• Cherry tomatoes cut in halves
• Juice of 1 lemon
• 1 tbsp corn starch
• Salt
• pepper