Peel the beetroot and cut into slices. Spread on a baking tray, sprinkle with sea salt and pepper and sprinkle with oil. Cook in the preheated oven (electric cooker: 200 °C/ circulating air: 175 °C/ gas: level 3) for approx. 30 minutes
Soak the rolls in plenty of water. Peel 2 onions and dice 1 finely. Drain anchovies and chop finely. Knead the minced meat with the onion, anchovies, pressed bread roll and egg, season with salt and pepper. Form the mixture into small meatballs
Halve the remaining onion. Boil up salted water with onion and bay leaf, reduce heat. Put balls in the water and let them simmer for 6-8 minutes. Remove the balls with a skimmer and set aside. Pour the cooking stock through a sieve. Melt the fat in a saucepan. Sprinkle flour over it and sweat while stirring. Measure out 500 ml of cooking stock and gradually add while stirring. Add the stock and let everything simmer for about 5 minutes
Whisk the egg yolk and cream. Drain the capers. Add meatballs and capers, heat in the hot sauce. Fold the egg yolks into the sauce, do not let them boil anymore. Season with salt, pepper and lemon juice. Wash the chives, dab dry and cut into small rolls. Sprinkle over the meatballs. Serve with beetroot. Serve with rice