Shu Mai (Steamed Chinese Dumplings)

Combine soy sauce and gelatin in small bowl. Set aside to allow gelatin to bloom, about 5 minutes.

Meanwhile, place half of pork in food processor and pulse until coarsely ground into approximate 1/8-inch pieces, about ten 1-second pulses; transfer to large bowl. Add shrimp and remaining pork to food processor and pulse until coarsely chopped into approximate ¼-inch pieces, about five 1-second pulses. Transfer to bowl with more finely ground pork. Stir in soy sauce mixture, water chestnuts, mushrooms, cornstarch, cilantro, sesame oil, wine, vinegar, sugar, ginger, salt, and pepper.

Divide egg roll wrappers into 3 stacks (6 to 7 per stack). Using 3-inch biscuit cutter, cut two 3-inch rounds from each stack of egg roll wrappers (you should have 40 to 42 rounds). Cover rounds with moist paper towels to prevent drying.

Working with 6 rounds at a time, brush edges of each round lightly with water. Place heaping tablespoon of filling into center of each round. Following illustrations below, form dumplings, crimping wrapper around sides of filling and leaving top exposed. Transfer to parchment-lined baking sheet, cover with damp kitchen towel, and repeat with remaining wrappers and filling. Top center of each dumpling with pinch of grated carrot, if using.

Cut piece of parchment slightly smaller than diameter of steamer basket and place in basket. Poke about 20 small holes in parchment and lightly coat with nonstick cooking spray. Place batches of dumplings on parchment liner, making sure they are not touching. Set steamer over simmering water and cook, covered, until no longer pink, 8 to 10 minutes. Serve immediately with chili oil.