Yes, this is true.

To commemorate its 18th annual celebration of National Hamburger Month, White Castle has teamed up with Laura Slatkin, founder of Nest Fragrances, often called the “queen” of home fragrances, to introduce a candle with the steam-grilled-on-a-bed-of-onions scent of America’s first fast-food hamburger. Packaged in a ceramic holder that reproduces the signature cardboard sleeve of the White Castle hamburger packaging, the candles are available in White Castle restaurants and at White Castle’s online store at www.houseofcrave.com. Candles sell for $10 each, with net proceeds benefiting Autism Speaks.