
Pastis is an anise-flavoured French spirit and apéritif defined by its flavouring with liquorice root alongside anise.
Dominant anise and liquorice, rounded by fennel, ranging from bone-dry to lightly sweetened depending on bottling.
Diluted with water — commonly around five parts to one — to trigger the louche, it works as a base measure or as a small rinse or barspoon accent lending anise aroma; sugar can correct sweetness if a drier expression is used.
Another anise spirit of comparable strength that carries the anise-and-liquorice aroma and louches on dilution; in a large or defining pour the swap is limited to other anise spirits, while as a rinse or accent almost any anise spirit serves, with minor sweetness adjustment.
Absinthe is a distilled spirit built on grande wormwood, green anise and fennel, traditionally dry and high-proof; pastis is a macerated, flavoured spirit defined by liquorice root, usually flavoured with star anise, may be sweetened, and is bottled at 40-50% ABV. Both louche on dilution, and pastis rose partly as a legal successor to absinthe after its ban.
Distillers flavour and macerate a neutral base rather than distilling a wormwood spirit, drawing anise most commonly from star anise and adding fennel and the defining liquorice root. It may be bottled with sugar, and it turns cloudy when diluted because anise-derived terpene oils drop out of solution below roughly 30% ethanol.
Pastis was first commercialised by Paul Ricard in 1932 and is especially associated with southeastern France, notably Marseille and Provence, emerging some 17 years after the French ban on absinthe.