Tom Byoo (Sour Fish Soup) Recipe

3 cups fish stock

1 (1 inch) piece fresh ginger

peeled and sliced into disks

or more to taste

1 (1 inch) piece galangal

peeled and sliced into disks

or more to taste

5 Thai chile peppers

crushed

2 kaffir lime leaves

torn

2 stalks lemon grass

cut into 2-inch pieces and crushed

2 shallots

crushed

1 (10 ounce) trout

scales removed and fish cut into steaks

5 cherry tomatoes

halved

¼ cup tamarind juice

or more to taste

2 tablespoons fish sauce

or more to taste

¼ cup chopped fresh cilantro

or to taste