Posset
A posset (/ˈpɒsət/, historically also spelled possyt, possot, poshote or poshotte), was originally a popular hot drink made of milk curdled with wine or ale, often spiced, which was often used as a remedy. In the 18th century, it was reportedly only drunk in Sweden, Norway and England.
The original drink became extinct and the name was revived in the 19th century and applied to a cream, sugar and citrus-based confection, which is consumed today as a cold set dessert nearly indistinguishable from syllabub.