Clean and wash spring onions and cut into slanted rings. Heat the fat in a pot. Sauté spring onion white for 1-2 minutes. Add the chestnuts. Deglaze with stock and cream, bring to the boil and simmer for 8-10 minutes. Puree with a hand blender. Season to taste with salt and pepper
In the meantime, dab the meat dry and cut lengthwise into thin slices. Put meat on wooden skewers and season with salt and pepper. Heat oil in a pan. Fry the meat for 2-3 minutes on both sides. Arrange soup and 1 beef saté skewer each and sprinkle with spring onion green