Plum jerkum and in flavour "from a sticky sweetness to a sparkling tartness" depending on the type of plum used. The Worcestershire author and farmer Fred Archer mentions jerkum several times in his stories of rural life, as does John Moore in his books set around a fictionalised Bredon Hill. Some aficionados in American craft beverages have started to use "jerkum" as a broader term encompassing the alcoholic drink produced from any unadulterated fermented stone fruit (e.g., nectarine, peach, apricot, pluot). Plum jerkum Plum jerkum is an alcoholic drink produced from plums. It has been variously described as made in the same
Plum-headed parakeet the French name "Le perruche a teste bleu" and the Latin name "Psittaca cyanocephalos". Although Brisson coined Latin names, these do not conform to the binomial system and are not recognised by the International Commission on Zoological Nomenclature. When in 1766 the Swedish naturalist Carl Linnaeus updated his "Systema Naturae" for the twelfth edition he added 240 species that had been previously described by Brisson. One of these was the plum-headed parakeet. Linnaeus included a terse description, coined the binomial name "Psittacus cyanocephalus" and cited Brisson's work. The specific name "cyanocephalus/cyanocephala" combines the Ancient Greek words "kuanos" "dark-blue" and "-kephalos"