For the ribs, boil 3-4 litres of salted water in a large pot. Wash the ribs and simmer in the salt water (the meat must be covered) for about 1 1⁄2 hours.
For the barbecue sauce, peel and finely chop the onions, ginger and garlic. Heat butter in a pot. Sauté onions, ginger and garlic until translucent. Sprinkle sugar over it and let it caramelize golden yellow.
Stir in vinegar, ketchup, honey, Worcester sauce and cinnamon. Bring to the boil and simmer for about 15 minutes, stirring occasionally. Remove sauce from the heat.
Drain the ribs. Divide between the rib bones into 8-10 cm wide pieces. Place on a baking tray lined with baking paper. Coat all around with approx. 3⁄4 grill sauce. In a preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see
manufacturer) fry for about 45 minutes. After approx. 20 minutes, brush with some barbecue sauce again and continue cooking. Arrange the ribs. Add the rest of the barbecue sauce as a dip.