Due to complex nature of aerodynamic forces between the microdroplets in an ascending jet, the droplets do not coalesce but form a close-packed hexagonal structure showing similarity with various classical and newly discovered objects, where self-organization is prominent, including water breath figures, colloid and dust crystals, foams, Rayleigh–Bénard cells, and to some extent, ice crystals. The droplets pack near the center of heated area where the temperature and the intensity of the ascending vapor jets are the highest. At the same time, there are repulsion forces of aerodynamic nature between the droplets. Consequently, the cluster packs itself in the densest packing shape (a hexagonal honeycomb structure) with a certain distance between the droplets dependent on the repulsion forces.