Braised Pork Diaphragm (ขั้วตับหมูตุ๋น)

Ingredients

• Water 1.5 l
• Onion 100 g
• Coriander Root 2 roots
• Chinese Celery Root 3 roots
• Galangal 4 slices
• Garlic (skin on) 3 cloves
• Lemongrass (chopped) 1 stalk
• Black Peppercorn 1 tsp
• Star Anise 4
• Cinnamon 1 stick
• Dried Shiitake (soaked) 2
• Pork Diaphragm ½ kg
• Sea Salt 1 ½ tsp
• Seasoning Sauce 1 tbsp
• Light Soy Sauce 2 tbsp
• Palm Sugar 40 g
• Pickled Garlic 2 bulbs
• Pickled Garlic Brine ¼ cup
• Coriander (chopped) for serving
• Chinese Celery (sliced) for serving
• Spring Onion (sliced) for serving