Jerry Thomas,
The Bar-tender's Guide: How to mix all kinds of plain and fancy drinks…
(1887)
“ Before using the glass, rinse it in hot water. ↑ Sugar does not readily dissolve in spirits; it is necessary, therefore, in making hot toddy or punch to put in the water before the spirits, or at least sufficient of the water to entirely dissolve the sugar, taking care to warm the glass before pouring boiling water into it. The best Hot Whiskey Punch is made with pulverized rock-candy. This is preferable to sugar, for any hot drink made of whiskey or brandy. ”
