Pumpkin Soup

INGREDIENTS
3/4 medium sized butternut pumpkin, skin and seeds removed, chopped
2 medium potatoes, chopped
1 teaspoon garlic
1 onion, chopped
2 1/2 cups Massel vegetable liquid stock
1/2 cup full cream
1-1 1/2 teaspoons mild curry powder
1/2 chilli powder