Irish Punch

Modern American Drinks by George J. Kappeler (1895, p.88) — George J. Kappeler 1895

1. Fill a mixing-glass half-full of fine ice and add the sugar, a little water, lemon juice, and Irish whiskey.
2. Mix well, strain into a fancy bar-glass or leave on the ice, trim with fruit, and serve with straws.

Garnish: Fruit

Ice: Fine ice

Cocktails by Pedro Chicote (1928, p.305) — Irish=Ponche (caliente)

1. Build in a grog glass, stir, and fill with hot water.
2. Add a lemon slice.

Garnish: Lemon slice

This matters because it preserves a straightforward hot Irish whisky punch in Chicote's chapter.

The source describes a simple grog-style hot punch with lemon garnish.