The maker of kitchen classics like Pyrex and CorningWare is adding a new culinary darling, the Instant Pot, to its cupboard.

Corelle Brands, which owns Pyrex and other brands, said on Monday that it planned to merge with Instant Brands, the Canadian producer of electric multicookers that have taken the public, and the internet, by storm.

Such is the popularity of the Instant Pot — a sort of hybrid of gadgets like a pressure cooker and a slow cooker — that it has legions of self-described “Pothead” fans online. An Instant Pot group on Facebook has 1.8 million members.

Those are among the signs of the meteoric ascent experienced by a kitchen product with humble beginnings. It was created by Robert Wang, a computer scientist who spent $350,000 of his own money trying to create a cooker that could handle several different tasks.