PETER: Liáng bàn dòu fu is a classic cold tossed tofu dish that every family and restaurant serves, most commonly with pí dàn (thousand-year-old egg). Well, in case you haven’t had it before, thousand-year-old egg (also known as preserved or alkalized egg) has a very distinctive flavor to it. The egg, preferably duck egg, is preserved in clay, ash, alkaline salt, quicklime, and other ingredients for several weeks or months—not one thousand years, as the name suggests. Durin