Wash the fillet if necessary, dab dry with kitchen paper and cut in half lengthwise. Place one slice of ham and one sage leaf on each fillet. Heat oil in a coated pan. Fry the fillets for 3-4 minutes on each side. Season with salt and pepper
Meanwhile cook the ribbon noodles in boiling salted water for about 8 minutes. Wash spring onions and cut into pieces. Remove the fillets and keep warm. Sauté the spring onions in the frying fat. Deglaze with stock and bring to the boil. Stir in binding agent and let simmer a little bit
Refine sauce with cream. Season with salt, pepper and lemon juice. Drain the noodles and serve with vegetables and meat