Kellogg will re-launch Hydrox cookies in the US following a public campaign to bring back the biscuits that were discontinued five years ago.

The chocolate-and-cream sandwich cookie was invented in 1908, four years before the Oreo, which dominated with stronger advertising and distribution. Less sweet than Oreos, Hydrox was known for staying crunchier in milk and was always kosher.

Following relentless telephone inquiries, petitions and online campaigns, Kellogg is offering a limited release of Hydrox with its original recipe but free of trans fat.

"We've been touched by how many consumers describe their preference for Hydrox cookies as interwoven with their identity and family history," said Kellogg snacks president Brad Davidson, promising an extended run if the re-launch is successful.