What is Moreish?
1.
addictive, or not quite fully addictive. Sometimes a euphemism for the word "addictive".
Citation: Harper's Magazine, September 2005, p. 17, "Do Not Pass Out."
Chocolate truffles may not be addictive, but they sure are moreish.
2.
Chiefly British slang meaning tasty or appetising.
Michael Moore finds cheeseburgers very moreish.