The ancient source of vanilla ice cream?

The toponym of Xochichiu(h)can looks like vanilla ice cream

At first glance this tiny but splendid glyph from the Codex Mendoza looks remarkably like a hand holding a cone with vanilla ice cream! Instead, it’s the toponym (place sign) of a town in the mainly Otomí province of Axocopan, NW of Tenochtitlan, conquered by the forces of the Aztec-led Triple Alliance under emperor Motecuhzoma I (1440-1468). Its name in Nahuatl is Xochichiuhca(n), which means ‘Place Where Flowers Are Cultivated’... (Compiled by Ian Mursell/Mexicolore)