The week after photos of its new spinoff CosMc’s in suburban Bolingbrook surfaced on social media, McDonald’s officially announced the concept at an investor day in Chicago Wednesday.

       CosMc’s, named after a McDonald’s character from the 1980s whom CEO Chris Kempczinski described as “part alien, part surfer, part robot,” will be a 10-store, small-format pilot concept focused around specialty beverages and coffees. A CosMc’s in Bolingbrook will mark a soft opening Friday, the company said. The remaining stores will open in Texas by the end of 2024.

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       Kempczinski said Wednesday the fast-food giant had identified specialty beverages and coffees as a fast-growing area in which the company was underindexed.