Froth often appears after stimulating a liquid, like shaking soda or whisking coffee creamer. By vigorously shaking the bottle, he created froth on the lemonade.
Pro Tip 2/3
Visual Cue
Froth is a good visual indicator of well-prepared drinks like coffee or beer. The barista served the cappuccino with perfect froth on top.
Pro Tip 3/3
Quality Indicator
Froth can also suggest a drink's quality, with creamy froth being desirable in coffees. The creamy froth is a sign of a good espresso shot.