Here's the recipe for my
Thai pork & sweet potato soup, with credit to and based significantly on Andy Ricker's (Pok Pok) recipe for kaeng hung leh, a Thai/Burmese curry (perhaps my favorite curry). However, I also incorporated a few elements from khao soi and of course converted the curry into a soup.
Ingredients for the curry paste:
4 stalks lemongrass, bottom third only, peeled to use the tender interior parts only
1/2 teaspoon kosher salt
1/2 ounce piece of sliced galangal
5 stemmed dried pulla chiles (HarvesTime/Mexican markets or substitute 3 guajillos & cayenne or ground Thai hot pepper)
1 1/2 ounces sliced Asian shallots (smaller than US shallots-found all around Argyle)
1 1/2 teaspoons shrimp paste (Golden Pacific owner recommended Golden Boy)
Make the curry paste:
1) Pour boiling water to fully cover the stemmed Pulla chiles, and soak for 20 minutes. If using a food processor to make the paste, reserve the soaking liquid to help process the paste.
2) In a mortar & pestle or food processor, combine lemongrass, galangal, chiles, salt, shallots, and shrimp paste until it forms a thick paste. If using the food processor, you may wish to add a little water (start with 1/2 teaspoon) from the soaked chiles to help you process the paste.
3) At this point, the curry paste can be refrigerated for a few days or frozen.
Ingredients for the soup:
1 Tablespoon peanut oil
All of the curry paste from above
1 1/4 ounces of Asian shallots, thinly sliced
1 Tablespoon Madras curry powder (plus more to taste)
1/2 teaspoon ghost curry powder (sold at spice shops, but other hot curry powder can be substituted), plus more to taste
1 teaspoon freshly grated turmeric (use gloves) (Whole Foods)
1 pound skinless pork belly, cut into 3/4-1 inch chunks
1 pound boneless pork shoulder, cut into 3/4-1 inch chunks
1/4 cup fish sauce
2 Tablespoons & 1 teaspoon Thai thick black soy sauce
1 cup unsweetened coconut milk
2 1/4 ounces palm sugar, pulverized (sold at Asian markets), plus more to taste
1/2 cup tamarind concentrate or tamarind mixed with water (sold at Asian markets), plus more to taste
2 cups water
2 1/2 cups pork stock
2 Tablespoons liquid from Thai pickled garlic (sold at Asian markets)
1 1/2 ounces of ginger cut into very thin matchsticks
1 1/2 ounces pickled garlic cloves (sold as unpeeled heads at Asian markets)
1 pound of peeled, raw sweet potato, diced into 3/4 inch chunks
4 ounces long beans, sliced into 3/4-1 inch pieces
Make the soup:
1) Heat the peanut oil in stock pot over medium-low heat.
2) Add the curry paste to the pot and cook for a few minutes until it begins to perfume the air.
3) Stir in the sliced Asian shallots and cook until softened.
4) Stir in the Madras curry powder, ghost curry powder, and grated turmeric and stir until everything's combined and very fragrant.
5) Add the pork belly and pork shoulder and stir well to coat in curry and spice mixture.
6) Stir in fish sauce, thick black soy sauce, coconut milk, pulverized palm sugar, tamarind concentrate, water, pork stock and pickled garlic liquid and stir well.
7) Increase heat to medium high and bring to a simmer.
8 Cover pot and simmer for 45 minutes.
9) Stir in ginger and cook uncovered for another 45 minutes until the pork is tender and sufficient fat rendered.
10) At this point, I think the soup is best cooled overnight as a significant amount of fat will have accumulated and it is easier to skim when cooled. Skim 3/4 or so of the fat or according to your preference.
11) Reheat the soup and when hot, add in cubed sweet potatoes and simmer for 15 minutes. You want the sweet potato to be tender but not disintegrated.
12) Add pickled garlic cloves and cook for 10 minutes.
13) Add in chopped long beans and cook for 5 minutes until slightly softened.
14) At this point, the soup is ready - adjust seasonings to your taste (I played around a bit at this point with fish sauce, tamarind concentrate, madras curry powder, ghost curry powder and palm sugar). It should be savory and sour with some fish sauce/shrimp paste funk mixed in.
15 Garnish with fried egg noodles, fried shallots, ground roasted/salted peanuts, chopped cilantro leaves and ground Thai chile peppers.
Enjoy!