all-purpose flour (about 250 grams) • hot water, about 160°F (about 60 grams) • room temperature water (about 20 grams) • ground pork (about 300 grams) • salt (about 2 grams) • soy sauce (about 15 grams) • White pepper powder and soy sauce, to taste • Chinese chives, finely chopped (about 200 grams) • Minced ginger and chopped green onions, to taste • For pan-frying: 1/2 cup water (100 ml), 1 tablespoon flour (10 grams), 1 tablespoon oil