A balut is a fertilized bird egg (usually a duck) which is incubated for a period of 14 to 21 days, depending on the local culture, and then steamed.Eat it salt and vinegar.
It’s good while its hot. First you need to eat in dark place so that you will not see what you really eating. Cracked the top, pour some vinegar and salt on it then drink the water inside then eat.

Never heard of that! And how was it?!