Watch the layers settle and the creamy coffee float swirl into chilled perfection. This relaxing coffee float combines rich espresso, smooth milk, and a soft scoop on top—creating a visual and ...

An evaporating colloidal particle–laden droplet leaves behind a ring-like residue after drying. We routinely observe this ubiquitous phenomenon for dried coffee drops; thus, it is known as the "coffee ...

Researchers from the University of Campinas (Campinas, Brazil) and the Waters Research Center (Budapest, Hungary) introduced ...