Hmmm... I will have, for now, to disagree with this based on:legend wrote:the (皮蛋 pi dan) or hundred year eggs are actually preserved eggs. If there is an ammonia smell it is likely that it has come from bad production or storage.
1) several Chinese/Vietnamese colleagues
2) wikipedia
Both attributes the ammonia smell as a characteristic of century eggs.
OTOH, wikipedia describes ammonia as being an excellent source of nitrogen.legend wrote:If your Puer Shu cha or even Sheng cha has any notion at all of ammonia it is worthless and there is no nutrition in it at all
This being said, I would not drink a shu puerh that smells ammonia.