Heat the avocado oil in a large Dutch oven or heavy-bottomed pot over medium heat. Add the sliced onion and cook for 4-5 minutes, stirring occasionally, until softened.
1 tbsp (15 ml) avocado oil, 1 cup (150 g) sliced yellow onion
Add the ginger, garlic, toasted sesame oil, and red curry paste, adding more avocado oil if the pot seems dry. Cook for 2-3 minutes, stirring frequently, until fragrant. Reduce the heat if the garlic begins to brown.
1 tbsp (6 g) minced fresh ginger, 2 tbsps (17 g) minced garlic, ½ tsp (2.5 ml) toasted sesame oil, 2-4 tbsps (30-60 g) Thai red curry paste
Slowly stir in the coconut milk until the curry paste is incorporated, then add the chicken broth and sliced mushrooms. Bring to a gentle boil and cook for about 5 minutes, until the mushrooms are tender.
1 can (14 oz / 400 ml) full-fat coconut milk, 4 cups (960 ml) low-sodium chicken broth, 8 oz (227 g) white button mushrooms
For a thicker coconut curry broth, whisk the cornstarch and cold water together until smooth. Stir the slurry into the gently boiling soup and cook for 2-3 minutes, stirring occasionally, until thickened. This step is optional; the full-fat coconut milk already makes the broth creamy without it.
2 tbsps (16 g) cornstarch, 2 tbsps (30 ml) cold water
Add the frozen pork potstickers if the package includes boiling instructions. Cook according to the manufacturer's directions, stirring carefully to prevent sticking or tearing the wrappers. The dumplings should be tender and the pork filling fully cooked, reaching 165°F (74°C) if specified by the package. If boiling instructions aren't provided, prepare the potstickers separately according to the package directions and divide them among the serving bowls.
24 frozen pork potstickers
Remove the soup from the heat and stir in the fish sauce and lime juice. Taste and adjust with additional lime juice or salt as needed.
2 tsps (10 ml) fish sauce, 1 tbsp (15 ml) fresh lime juice, salt
Divide the soup among four bowls, with six pork potstickers per serving. Garnish with chili crisp, green onions, cilantro, or chopped peanuts as desired. Serve immediately.
chili crisp, chopped green onions, chopped fresh cilantro, chopped dry-roasted unsalted peanuts