Mummification.

And now for something completely different: Researchers have found out details about how corpses in Egypt were mummified. There was a number of substances used, in specific mixtures for specific parts, and we now know this due to the discovery of an embalming workshop in Saqqara, dating to the 26th dynasty.

You can read more about it in this Open Access article at nature.com, or if you prefer a short German summary, here is one.  

(I think I'd still prefer to get buried in a grave mound instead of getting mummified and put into a pyramid...)