Shanghai Soup Dumplings
These delicate dumplings bursting with flavor were invented in the late 1800s in Nanxiang village outside Shanghai. Despite their name, they are not served floating in soup. The soup is contained within the thin, chewy-soft wrapper, along with a rich pork mixture. A delectable culinary trick, these “little bamboo steamer buns” (the literal translation of the Chinese name) are the quintessential Shanghai snack served at dumpling restaurants as well as small food joints. To get the soup into the dumplings, broth is gelled, chopped, and then mixed with the meat to produce a firm filling that can be stuffed efficiently into the wrapper. Under steam heat, the broth melts back into soup. Gelatinous pork skin is traditionally simmered for the broth, but many modern cooks employ agar-agar (see Note) or unflavored gelatin to insure proper gelling. For a robust soup, I infuse homemade chicken stock with smoky American country ham, which is often sold in slices at Chinese markets as “Virginia” or “Smithfield” ham; scrape and discard the black pepper coating, if present. Combining bread flour (Gold Medal brand, which has 12 percent protein, is what I use) with all-purpose flour for hot-water dough produces thin and elastic wrappers that don’t break during cooking or when picked up by chopsticks at the table. Fatty ground pork, the less expensive option at a Chinese market, or ground pork belly (cut it up into 1/2-inch cubes before processing), makes the most succulent filling. Prepare and gel the soup the day before to lessen your workload.
Agar-agar powder, a seaweed-based gelatin popular in Asia, is sold at Asian markets in 25-gram packages. Telephone brand from Thailand, sold at Chinese and Southeast Asian grocers, is the standard of excellence; I often ask the cashier for it because the small packages are easily missed on store shelves. Agar-agar flakes, sold at many health food markets, do not dissolve as quickly as agar-agar powder and unflavored gelatin. By the time the flakes dissolve, much of the soup has evaporated. The flakes do not work well for making the soup in this recipe.