Literally, "velador" denotes a pedestal, nightstand, or the like. Veladores (four pieces for 10 pesos, or about 50 cents at the time) resemble small, round tabletops made from shredded coconut; these tasted like macaroons flavored with pineapple, anise, lime, or orange.
Note also the calculator, employed by many street and market vendors not only to tote up the price but also to minimize confusion when spoken language may be an impediment. (Note to self: work on accent.) At another stand, after I'd polished off a pair of tacos, the expeditor flashed my total; I handed over a not-very-large banknote, which led to much back-and-forth behind the counter, but to little effect. The expeditor reached again for his calculator to ask, did I have a small coin, which would make it much easier for them to make change? His message: 2. Understood; done.
Mercado del Dulce (alongside the Mercado de la Merced), Anillo de Circunvalación 12, Zona Centro, Mexico City