Prepare the Vegetables: Wash the tomatoes, onions, daikon radish, string beans, and baby boy chow. Peel and chop the daikon radish. Cut string beans into 1-2 inches and chop the tomatoes and onions.
Prepare to Blanch Pork: Start by rinsing the pork ribs thoroughly with water in a bowl with 1/4 cup of chopped onions and a dash of pepper. Once drained, transfer the ribs to a larger pot. Fill the pot with enough water to fully cover the pork and bring it to a boil. Let it cook for 15 minutes.
Blanch the Pork: Drain the pot completely. Rinse the pork ribs thoroughly with water to remove impurities.
Start Cooking the Soup Base: Return the pork ribs to pot and add 10 cups of water
Add In the Vegetables: Add in the chopped tomatoes and onions, cover the pot, and boil on medium-high heat for 45 minutes.
Pour In the Seasoning Mix: Add in the entire packet of sinigang powder mix! For an even more sour taste, add in another half a packet. Add in 3 tbsp of fish sauce.
Add More Vegetables: Add in the daikon radish (peeled and chopped), and the string beans. Cover and boil for an additional 20 minutes.
Add In Baby Buk Choys: Add in 2 bunches of baby bok choy (washed), and let it cook for additional 10 minutes. Then you're ready to serve!