Kraft Heinz has proposed a merger with Unilever, the maker of Hellman’s mayo and a host of other household brands, but the Anglo-Dutch consumer goods company has declined, Kraft said on Friday.

But that isn’t stopping Kraft Heinz from its attempt to bring together two leading ketchup and mayo brands.

“Kraft confirms that it has made a comprehensive proposal to Unilever about combining the two groups to create a leading consumer goods company with a mission of long-term growth and sustainable living,” Kraft said in a statement.

“While Unilever has declined the proposal, we look forward to working to reach agreement on the terms of a transaction.”

Unilever spokeswomen did not immediately reply to requests for comment.

Kraft said a further statement would be made as appropriate.