What is a chocalate moose pie?

It seems you've made a delightful typo! There's no such thing as a "chocalate moose pie." It sounds like you're probably referring to a chocolate mousse pie.

Chocolate mousse pie is a delicious dessert made with a chocolate mousse filling, usually served in a pie crust. The mousse is light and airy, and the chocolate flavor is rich and decadent.

If you're interested in learning more about how to make chocolate mousse pie, I can give you some recipes or tips! Just let me know what you'd like to know.