Stellina is a herbal liqueur

Liqueur

A liqueur is an alcoholic beverage that has been flavored with fruit, herbs, nuts, spices, flowers, or cream and bottled with added sugar. Liqueurs are typically quite sweet; they are usually not aged for long but may have resting periods during their production to allow flavors to marry.The...

 made by the monastic order of the Sainte Famille (Holy Family) in Belley

Belley

Belley is a commune in the Ain department in eastern France.-History:Belley is of Roman origin, and in the 5th century became an episcopal see. It was the capital of the province of Bugey, which was a dependency of Savoy till 1601, when it was ceded to France...

, France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

.
It is considered similar to Chartreuse

Chartreuse (liqueur)

Chartreuse is a French liqueur made by the Carthusian Monks since the 1740s. It is composed of distilled alcohol aged with 130 herbal extracts. The liqueur is named after the Monks' Grande Chartreuse monastery, located in the Chartreuse Mountains in the general region of Grenoble in France...

, both being made by monks in the same region, to secret recipes, and also coming in both green and yellow. However, Stellina is much younger (dating to 1904, rather than 1605), smaller (the Sainte Famille order has 300 members), and much less-known than Chartreuse.