what was the substance used to stuff nostrils?

The ancient Egyptians stuffed the nostrils with resin or wax.

http://209.85.165.104/search?q=cache:3ghP1ChFOJYJ:www.touregypt.net/featurestories/mummification.htm+mummification+nostrils+resin&hl=en&gl=us&ct=clnk&cd=1&ie=UTF-8

The substance used to stuff the nostrils during ancient Egyptian mummification was typically resin or wax. To find this information, one can search for "ancient Egyptian mummification nostril stuffing" or similar keywords on a search engine. This will provide various sources and websites that contain detailed information about the mummification process, including the use of resin or wax in the nostrils. One such source is the page cached from touregypt.net, which explains the mummification process, including the use of resin or wax to stuff the nostrils.

Remember to always verify the information by cross-referencing multiple sources to ensure accuracy.