UNAS is a cake shop near Dosan Park in Samseong-dong, Gangnam-gu, Seoul, selling avocado-shaped cakes, cannelés, and macarons. Its signature items are cakes that keep the shape of their main ingredient and a tarte tatin. A pastry chef holds baking classes here on a regular schedule, and customers register for the waitlist by entering their name, phone number, and party size before entering. The indoor space is not large, so waits are common.