El Bar Americano en España by Pedro Chicote (1927, p.110)

1 tablespoonazúcar en polvo — OCR reads 'r' for 1.base
1 liqueur-glasscoñac — OCR reads 'r' for 1.base
leche hirviendo — Used to fill the drink.other
  1. Build in a grog glass with sugar and cognac.
  2. Finish by filling the glass with boiling milk.