There are many different kinds of pork dumplings, and siu mai are one of the most popular, typically served in dim sum restaurants. When homemade, the dumplings are unsurpassed, if they are made with an equal amount of fresh water chestnuts to ground pork, Chinese mushrooms, cilantro, and scallions.
Siu mai are distinctly different from other dumplings, because they are made with round won ton skins, not the typical square-shaped skins. Each brand has a different thickness of dough, but the thinner the better; the dumplings will be more delicate. If round won ton skins are not available, I cut square wrappers into 3-inch-wide circles. This recipe makes about 3 1/2 dozen siu mai. Steam as many as you need, or cover in plastic wrap, refrigerate, and steam within two to three hours.