Place dried shrimp, red chillies, shallots, ginger, ground turmeric and lemongrass in mixing bowl, chop 30 sec/speed 6-10, increasing speed gradually until a fine paste is achieved. Scrape down sides of mixing bowl with spatula.
Add tomatoes and oil, sauté 5 min/120°C/⏲/speed 2. Meanwhile, soak mee hoon in ambient water for 1 minute. Drain through Varoma dish, set aside.
Add 3 kaffir lime leaves, fish sauce, palm sugar, dark soy sauce, cabbage and water, cook 7 min/100°C/⏲/speed ¾.
Add prawns and reserved meehoon, stir fry 3 min/120°C/⏲/speed ¾. Transfer mee hoon to a serving plate, garnish with torch lily buds, 3 shredded kaffir lime leaves and drizzle with lime juice. Toss well and serve immediately.