Prepare rice in boiling salted water according to package instructions. Meanwhile, wash parsley, dab dry and pluck leaves from the stalks, except for some for garnishing. Chop parsley finely.
Knead minced meat, breadcrumbs, tomato paste, parsley and egg. Season with salt and pepper. Form approx. 20 balls from the minced meat mixture. Heat the oil in a deep frying pan. Fry the meatballs all around for about 10 minutes until golden brown.
Take it out. Add the leek to the frying fat and fry briefly. Sprinkle with curry and flour and sauté. Deglaze with stock and milk while stirring. Bring to the boil and simmer for about 5 minutes. Add meatballs and fold in carefully.
Mix the hazelnut leaves and rice. Pour into greased ramekins (e.g. pyramids), press down a little and turn out onto plates. Serve with leek ragout and garnish with remaining parsley.