Pumpkin and leeks soup with apple beer - Le Coup de Grâce

Ingredients

• 1 pack (250g) sliced leeks ( or about 2 big leeks )
• Olive oil
• Salt and ground pepper
• 5 cups pumpkin flesh ( or butternut squash ), cut in cubes
• 1 russet potato, peeled and cut in cubes
• 1 sweet potato, peeled and cut in cubes
• 1 Cortland red apple, peeled and cut in cubes
• 1 teaspoon herbs of Provence
• 1 teaspoon dried origano
• 1x341ml Éphémère apple beer from Unibroue
• About 4 cups chicken broth
• Fresh chive, sliced
• Parmesan shavings