Does anyone know what the pink vinegar is, that is served with crispy pot stickers (Chinese fried dumplings). Around here, they are generally served with two dipping sauces - 1) chili oil and 2) pink vinegar. I am planning to make pot stickers but really have no clue what the vinegar is. It definitely does not contain soya sauce. I'm not sure what it is or how I could make it. Does anyone in Chow Land know what I'm taking about? Any ideas on how to make it?