Sinigang Na Hipon (Shrimp in Sour Soup)

Ingredients

• 1 pound of fresh shrimp, heads and shells on
• 2 medium-sized tomatoes, quartered
• 1 large red onion, quartered
• 1 inch piece of ginger, peeled and sliced
• 2 pieces of radish, sliced
• 1 bundle of string beans
• 2 pieces of banana pepper (or green chili pepper)
• 1 bundle of water spinach, cut into 3 inch lengths
• 1 pack sinigang mix (or about 1.4 ounce tamarind powder)
• 7 cups of ricewash or water
• 2 tablespoons of fish sauce