A refreshing herbal drink made with herbs, spices, and wormwood, which Magrat Garlick's herbal assures her is good for ƒtomach diƒorders and diƒagreements and helps prevent sickneƒs after meals. So that's all right then.
Nanny Ogg, however, diƒagreed: she contended that it's not like proper drink, you can never make a serious drink out of just herbs, but she'd try a drop anyway. Granny Weatherwax noted that it smelt like aniseed, so it was probably all right in that case.
Given the known effects of absinthe consumption on Roundworld - it does more than make the heart grow fonder - it is tempting to speculate that the Discworld version may be a local relative of splot.