Peel and wash the kohlrabi, first cut into thick slices, then into cubes. Steam covered in boiling salted water for about 8 minutes, drain. Collect the vegetable water. Wash the meat, dab dry and cut into large pieces. Peel and chop onions.
Fry in hot clarified butter. Add meat and fry on all sides for about 2 minutes, season with salt and pepper. Remove the meat. Add 1/4 litre vegetable water to the roast. Stir cornflour and milk until smooth and add to the stock. Bring to the boil again and season. Wash basil, cut into fine strips and stir in. Put the fillet and kohlrabi in an ovenproof dish. Pour sauce over them.
Bring to the boil again and season. Wash basil, cut into fine strips and stir in. Put the fillet and kohlrabi in an ovenproof dish. Pour sauce over them. Spread fat in flakes on top and sprinkle with breadcrumbs. Bake in the preheated oven (electric cooker: 200 °C/ gas: level 3) for about 15 minutes
Form: Pillivuyt