Wikipedia
Trembleuse
Trembleuse or Tasse Tremleuse or Gobelet et soucoupe enfoncé is a drinking cup and saucer which originated in Paris in the 1690s.
It was designed to allow people suffering from the trembles to drink a beverage, initially hot chocolate. The cup sites in a saucer with either a well, or a raised rim to prevent the saucer from slipping. Cups were designed with or without handles, and optionally a lid.
Many of the most famous porcelain manufacturers, such as Sèvres and Meissen produced Trembleuse.
Sèvres used the term Gobelet et soucoupe enfoncé for the saucer with a well in its catalogues from 1759.