abstemious

Pronunciation: \ab-ˈstē-mē-əs\ (listen to it on m-w.com)

Adjective: Marked by restraint; abstinence. Sparing. Especially in regards to food and alcohol consumption.

Etymology: Early 17th century. From Latin abstemius; temetum (strong wine; intoxicating liquor)

Usage: Lots of great usage examples in Google Books search results.