Chartreuse (liqueur) was not a secret but well known. At the death of the pharmacist, his heirs returned the manuscript to the monks who had been back at the Monastery since 1816. In 1838, they developed Yellow Chartreuse, a sweeter version of the Green Chartreuse, 40% alcohol liqueur (80° proof). The monks were again expelled from the monastery following a French law in 1903, and their real property, including the distillery, was confiscated by the government. The monks took their secret recipe to their refuge in Tarragona, Catalonia, and began producing their liqueurs with the same label, but with an additional label
Kovilj Monastery for its honey and rakia. In the process of restitution, the state returned to the monastery previously nationalized of arable land and of forests. As of 2017, a brotherhood of 30 monks cultivates some . They keep 200 bee hives and produce a famed white basil honey (from "Stachys annua L."). The monastery produces a variety of brandies made of quince, plums, green nuts but also cognac and walnut liqueur. The monastery produces of brandy per year. Other activities include production of candles and crafting of icons, which, together with numerous herbal balms, can be bought in the monastic shop.