What is "lambig"

Labig (also known as Fine Bretagne, gwinardant, odivi or lagout) is a Bretagne liquor produced by distilling hard cider. Per AOC, lambig must be aged for a minimum of four years on oak. The beverage is equivalent to the calvados of Normandy.

Lambig can be added to cider to fortify it, creating pommeau bretagne.