Tom yam steamed fish

Ingredients

• 1 medium size (about 400g) white pomfret/bawal putih - de-gut and cleaned
• 1 inch ginger - half of it sliced and the other cut into thin stripes
• 1 large onion - sliced thinly
• 3-4 kaffir/limau purut leaves -sliced/shredded
• 1/2 tbsp fish sauce (optional)
• 2-3 birds eye chilies/cili padi - sliced
• 1 tsp sugar
• 1 tsp lime juice
• 4-5 tbsp oil
• Salt for taste
• For the tom yam paste (blend/process)
• 2 medium size tomatoes
• 2 red chilies
• 2 dried red chilies
• 1 lemongrass
• 1/2 inch galangal/lengkuas