Peel potatoes and cook in boiling salted water for 15-20 minutes. Clean and wash the savoy cabbage and cut into narrow slices. Peel and wash carrots and cut them diagonally into slices. Fry the savoy cabbage in hot fat on both sides until golden brown.
Add the carrots, pour on the stock and stew covered for about 15 minutes. Add cream and lemon juice, bring to the boil and stir in sauce thickener. Season to taste with salt and pepper. Chop hazelnuts coarsely and add to vegetables.
Drain the potatoes. Arrange savoy cabbage and carrot vegetables with the potatoes.