Potatoes are cleaned using a brush and larger cut. Put them in a saucepan and cover with water. When a boil reduce heat and allow to simmer for 15-20 minutes until tender. For the sauce mix in a small bowl, cream, yoghurt, onions and chopped thyme. Stir vigorously and seasoned with salt and pepper. Chips are served in a large flat dish. In the middle put the bowl with the sauce and potatoes are arranged around it. You can decorate with lettuce leaves or twigs curly parsley.