The Signal: Searches for the Dalgona Coffee trend skyrocketed, as this frothy, foamy, caffeinated concoction captured the attention of a planet stuck at home, longing for its café fix.

Dalgona Coffee is a new name for an old recipe. Instant coffee, sugar, and hot water are whisked together until light and foamy, then spooned over a glass of iced milk. It’s similar to India’s hand-beaten coffee, Pakistan’s “phitti hui” coffee, and the Greek frappé.

Dalgona coffee’s simple ingredients and photogenic nature made it a social media sensation, with people around the world now trying to whip up their own.