Okay, since the question seems to buried already (slow down, you guys!) I'll take a stab at it. It's a partially incubated egg - usually duck, from what I can figure out - that is sold in some Asian Food Markets. They are considered delicious by those who have been that brave. Some of them have been prepared, since they are often eaten hard boiled at that stage of development, others are not so that the consumer can do that at home. Kiki bought a couple to do a taste test of different poultry eggs, put them in her fridge, then decided to candle them only to see living embryos in them. And here we are....
Now excuse me while I go get an Alka Seltzer.....