Korma curry meatballs

Name: Korma curry meatballs
Ingredients: 2 tablespoon vegetable oil; 1 medium brown onion (150g), cut into wedges; 1/4 cup (75g) korma paste; 810 gram (1½ pounds) canned diced tomatoes; 1/4 cup fresh curry leaves; 500 gram (1 pound) lean minced (ground) lamb; 1/3 cup (55g) currants; 3 teaspoon minced (ground) ginger; 1 teaspoon coarse cooking salt (kosher salt); 750 gram (1½ pounds) canned tiny taters (baby new potatoes), drained; 1/2 cup (140g) tzatziki; 75 gram (2½ ounce) assorted ready-to-eat mini pappadums; 2 tablespoon curry leaves, extra