Dur Sugar of Pearl.
Take white Sugar-candy powdered, and searced 3 ounces; Pearl prepared 1 ounce: Make it into a subtile Powder.
Its use is for the making up of Pearl-Juleps speedily and easily, thus:
Take what Waters you have occasion for 12 ounces, Sugar of Pearl half an ounce; mix.
Thomas Fuller
Pharmacopeia Extemporanea 1710