My Family's Favorite Cook Seafood Sinigang with Fresh

Ingredients

• 1 medium onion, quartered
• 2 medium tomatoes, quartered
• 8 cups (2 liters) water
• ½ cup (120 ml) tamarind paste
• 4 tablespoons fish sauce
• 1 pound (450 g) shrimp, peeled and deveined
• 1 pound (450 g) firm white fish, cut into chunks
• 1 cup (150 g) mussels, cleaned
• 1 cup (150 g) radish, sliced into half-moons
• 1 cup (150 g) eggplant, cut into cubes
• 1 cup (100 g) long green beans, trimmed
• 1 cup (150 g) water spinach or bok choy