It's the fast food chain's first-ever plant-based hot dog.
Portillo's said it's packed with pea protein and smoked to provide a plant-based twist on a classic hot dog.
The Field Roast Signature Stadium Dog, also available at retail stores nationwide, will be topped with mustard, relish, onion, tomatoes, sport peppers and pickles, like the original Chicago hot dog.
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"We are incredibly proud to partner with Portillo's to bring the flavor of Field Roast to this iconic chain rooted in Chicago hot dog history," said Adam Grogan, president of Greenleaf Foods, SPC. "Americans eat billions of hot dogs every year, and now they have a delicious plant-based option to satisfy this classic craving."
The Garden Dog will roll out in restaurants in a matter of weeks.