pork spare ribs (500 grams) • ground pork (30 grams) • pork or chicken blood curd, as preferred • fresh rice noodles (khanom jeen) (1 kilogram) • large onion, finely chopped • tomatoes (500 grams) • lemongrass, cut into 1-inch pieces • dried red cotton tree flowers (dok ngio) • shallots • dried red chilies, soaked (add more for extra heat) • shrimp paste • garlic •