Use whatever pork is on sale. If it comes with a bone - even better. In place of salt, you can use a few dashes of fish sauce. The dried scallops and shrimp can be found in an Asian market -- but if you can't find these ingredients, feel free to leave them out. The dried scallops/shrimp add incredible savory and ocean-salty flavor (you'll use less salt to season the soup).
Ingredients:1 pound pork, cut into large chunks
6-8 dried shrimp
2-3 dried scallops
One 2-inch piece of ginger, cut into chunks
2 whole cloves garlic
1 large Daikon radish, peeled and cut into chunks
3 large carrots, peeled and cut into chunks
2-3 tomatoes, cut into quarters
Salt to taste
Bring a large soup pot filled with water to a rolling boil. Add pork and bones and let boil rapidly for 10 minutes. Remove pork and set aside. Drain and discard the water, clean the pot if needed. Fill the pot with new water to make the broth (approximately 4 quarts) and add in the pork, bones, shrimp, scallops, ginger, garlic. Bring to a simmer and then turn the heat to medium-low, or hot enough to just produce a gentle simmer for 30-40 minutes.
Occassionally, skim the soup of any fats or particles and discard. Add radish, carrots and tomatoes to the soup and simmer for another 15-20 minutes. Season with salt (or fish sauce) to taste.