1 piece ginger fresh cut into 1/4-in.-thick coins (1 in. by 2 in.)
1 teaspoon garlic minced
2 tablespoons garlic toasted
2 teaspoons juice of lime
1 serrano chile stemmed sliced
1 cup shallots thinly sliced (from 3 large)
1 tbsp thai fish sauce
2 cups tomatoes fresh diced with juice canned
3 tablespoons vegetable oil
Equipment
bowl
ladle
pot
Directions
Slice fish fillets into 1-in.-wide strips and place in a bowl.
Add 1 tbsp. fish sauce and the cornstarch and toss to coat evenly.
Heat oil in a large pot over medium heat.
Add shallots and cook, stirring occasionally, until just softened, about 5 minutes.
Add garlic and cook another 30 seconds.
Add tomatoes, ginger, chile, fish skeleton and head, and 2 qts. water; increase heat to high and bring to a simmer. Lower heat to a low simmer and cook, uncovered, 1 hour.
Remove fish skeleton and head and discard.
Add fish strips and lime juice just before serving, then simmer 3 to 5 minutes, until fish is opaque throughout. Taste broth and add more fish sauce if you like.
Ladle into warmed soup bowls and top with cilantro and toasted garlic.
Serve immediately.
*A fishmonger can fillet the fish for you, but be sure to ask for the bones and head--they give rich flavor to the soup.