The custom of placing ice cubes in one's beverages originates in a ritual to honor Eiscue, who were long believed to keep the seas around Galar chilly – but more importantly, to keep them calm. The antennae on their heads were thought to stabilize the oceans, and fierce storms were, in a curious mixture of old legends and modernity, likened to the static of a radio or television set should a different sort of antenna be damaged.
Eiscue do not calm the seas, a fact learned near the unhappy and distant end of many sailors' lives (who could not, alas, return with their Eiscue to debunk the myth), but there is a connection between the status of the sea and that of the local Eiscue; it is simply that pre-scientific Galarians reversed the causality. To encounter a Noice Face Eiscue in the wild is a sure sign of quickly warming waters, which in Galar's cold climate means fierce storms are not far behind. Eiscue's sensitivity to changes in heat and water pressure make them a far cheaper alternative to more advanced meteorological instruments, and one the public has learned to rely on; should it actually be pollution or rampaging Sharpedo that damaged the integrity of the local Eiscue's ice cubes, tourists and locals alike will nonetheless avoid the shore.
Noice face is also a common sight among those Eiscue belonging to pokemon trainers, for there are many things other than weather capable of damaging the fragile ice on these pokemon's faces. Curiously, in the Wyndon Stadium lounge and concession stands for the Galar League's top events, ice is served with drinks not in a cubic shape, but in the shape of the icy oval left behind once an Eiscue's helmet is broken.