Wash the cucumbers, cut off 6 thin slices and put aside for garnishing. Peel and chop the rest of the cucumbers. Wash and halve the chilli, remove the seeds. Chop the pod finely. Peel and grate ginger.
Mix ginger, chilli, vinegar, salt, pepper and sugar. Add 6 tablespoons of oil. Mix the marinade and cucumber cubes and let it soak through. Peel and finely dice the onion. Knead minced meat, onion, egg yolk and breadcrumbs.
Season with salt, pepper and curry. Form 12 small balls from the mince mixture. Heat 2 tablespoons of oil in a pan. Fry the balls for 6 minutes and take them out. Heat 1 tablespoon of oil in a frying pan.
Rinse the prawns, dab dry and fry for 3 minutes. Season with salt and pepper. Put 2 meatballs with coriander leaves and cucumber slice on 6 skewers. Put 2 prawns each on 6 skewers.
Season the cucumber salad to taste again. Fold in remaining coriander leaves. Fill cucumber salad into glasses. Put minced meat and prawn skewers into the salad.