West African Chicken & Groundnut Stew

• 1 onion
• 1 garlic clove
• 1 sweet potato
• 525 gr tomatoes (whole)
• 475 gr green giant great
• 350 gr rice (hot cooked)
• 200 gr green giant niblets -golden sweet corn
• 180 ml water
• 55 gr peanut butter
• 6 gr tomato paste