Serves 4
Ham hock
Put all ingredients in a pot and bring to the boil for 2 hours. Pass through a fine-mesh sieve and reserve the liquid. Set aside 250 ml for cooking.
Beef
Take the rib out of the fridge and allow it to come to room temperature. To make the N'Dole, sweat onions, garlic, chillies and biryani spice in a deep pot. Add kapenta/ikan bilis and cook for a further 5 minutes. Add chard and spinach and cook until all water has evaporated. Deglaze the pot with ham hock stock and season to taste.
Light the barbecue and wait until the coals have ashed. Brush the rib of beef with olive oil and caramelise one side, then flip and caramelise the other side. Continue flipping from side to side for 15 minutes, brushing with olive oil as you go. Leave to rest for 7.5 minutes.
To serve
Season liberally with salt and pepper.
Carve and serve with N'Dole. Flatbread and pickled vegetables work well as a side.