Curried Butternut Soup

Ingredients

• 2 lbs butternut squash, peeled and cut into chunks
• 4 cups chicken or 4 cups vegetable stock
• 2 tablespoons butter
• 1 large onion, peeled and finely chopped
• 2 cups button mushrooms, sliced
• 1 tablespoon mild to medium curry powder
• 1 tablespoon flour
• 2 teaspoons brown sugar
• 1 dash turmeric
• 2 tablespoons brandy
• 1/2 cup natural yoghurt