FILE: Exterior of Costco Wholesale store. Slice soda has made its return and is now available at select Costco locations. 

Slice, a nostalgic soda that first appeared on grocery store shelves 41 years ago, has made a triumphant return — albeit with a twist.

The popular soda, once owned by Pepsi, made its comeback last month when it hit the store shelves of select Costco Wholesale locations as well as select Albertsons and HEB supermarkets around the U.S., according to a

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