Ever heard of an “Oklahoma Onion Burger”? As legend has it, this greasy delight was created in the 1920s in Reno, Oklahoma, by an enterprising restaurateur who wanted to cheaply feed striking railroad workers. His solution was to pad ground beef with onions, then sizzle it all on a grill to make a less expensive but tummy-satisfying fried-onion burger.

Today diners can enjoy this taste of the ’20s at Sweet Onion Burger, which operates out of shared commercial kitchens called Local Kitchens, which has a location in Mill Valley. The chef behind the restaurant is Los Angeles’ Alvin Cailan, who founded Eggslut and hosts First We Feast’s “The Burger Show” on YouTube.

Cailan’s signature SOB is a quarter-pound of Angus with shaved onions fried to caramelization, slapped on a potato bun with pic

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