• Chop the onion, garlic and green beans
  • Chop the potatoes into small cubes
  • Heat the oil in a large saucepan over a medium heat
  • Add the onions and potatoes and fry for 10 minutes
  • Add the garlic and mince and fry for a few minutes until the mince is browned
  • Add the chopped tomatoes and equal parts of water
  • Bring to a boil then reduce to a simmer 
  • Simmer until the potatoes are almost cooked and add the chopped beans
  • Simmer for another 5 minutes
  • Season with salt and pepper
  • Stir in the sour cream, remove from the heat and serve