Mix the dumpling dough and ricotta. Season to taste with salt and pepper. With the help of 2 moistened tablespoons, cut off the cams and cook in lightly salted, slightly boiling water for 3-4 minutes, remove and drain.
Wash the meat, dab dry and season with salt and pepper. Heat oil in a coated pan. Brown the meat in it in portions for 2-3 minutes. Remove the meat and set the pan aside.
Place the meat in an ovenproof dish and cook in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 8-10 minutes. Then switch off the oven, leaving the door slightly open.
In the meantime, simmer the beans in boiling salted water for 4-5 minutes. Take the beans out and quench them cold. Stir sauce powder into 125 ml cold water. Wash lemon grass, dab dry, tap a little and add to the sauce powder.
Boil up while stirring. Dice 125 g butter and whip into the sauce on the switched off hotplate until it has melted. Fold in cream and remove from the heat. Remove lemongrass from the sauce.
Melt 25 g butter in another pan. Add cams and fry all around for 3-4 minutes until golden brown. Re-heat the frying pan in the set aside pan. Leave the diced ham in it until crispy.
Peel and chop the onion, add it and fry it. Add the beans and fry them for about 2 minutes while tossing. Season with salt and pepper. Remove meat, cut in half diagonally, arrange on preheated plates with dumplings, beans and sauce.
Garnish with marjoram.