Which doughnut chain's 'Hot Light' sign indicates fresh doughnuts?

Krispy Kreme’s “Hot Light” sign indicates that fresh doughnuts are being made and are available at the shop. The glowing red light became one of the chain’s most recognizable customer signals.

Krispy Kreme was founded in Winston-Salem, North Carolina, in 1937 by Vernon Rudolph. The company’s signature Original Glazed doughnut is prepared from a yeast-raised dough, fried, and coated with a thin sugar glaze. Seeing the Hot Light traditionally meant customers could expect doughnuts straight from the production line, often still warm.

The sign is not simply a general advertisement for the brand. It is associated specifically with doughnut production and freshness, although exact operating practices can vary by location. Krispy Kreme later expanded the idea through digital notifications and store displays that alert customers when the light is on.

A common mix-up is assuming that any doughnut chain with a lit sign uses the same tradition. Mister Donut, Tim Hortons, and Dunkin’ have their own products and promotions, but “Hot Light” is especially identified with Krispy Kreme.