Can I use an Encyclopedia as a reference in an essay? I am writing a paper that is about another culture. I need to include references about the culture in my paper. Is an encyclopedia an acceptable source for general information about the  culture (communication, nutrition, holidays, religion?)
Can I use an Encyclopedia as a reference in an essay?


Yes, but, it mightn't be the best source. 

For instance, Britannica* has an entry on Coronavirus, as do many other encyclopedias. They probably aren't the most authoritative though. A better reference could be sought, e.g., the World Health Organization. The same is true for other topics, such as culture.

An encyclopedia may give you what you need, but other sources might be more authoritative/better.

* The first encyclopedia produced by a Google search.