A curry to go with champagne

Ingredients

• 1 apple
• ½ banana
• ½ onion
• 1 tablespoon butter
• 2 tablespoons flour
• 1 tablespoon Japanese curry powder
• 120 cl coconut milk
• seaweed or chicken broth
• 100 cl crushed tomatoes
• 1 clove garlic
• 1 bouquet garni (thyme, bay leaf, parsley)
• 1 lb./400 g boneless chicken meat
• 2 leeks
• 3 tablespoon soy sauce
• 4 tablespoons butter