In the midst of first lady Michelle Obama's campaign against child obesity and chef Jamie Oliver's prime-time TV initiative for cleaner cooking, a chicken chain is crowing about some aggressively fat-laden fare.

KFC's long-rumored Double Down waddles into stores on April 12, boasting an ingredient list that prompted a copywriters' caveat on the product's Web page that it is "Real! No fooling."

The bun-free ("so meaty, there's no room") sandwich features two pieces of bacon, two slices of melted cheese and "Colonel's Sauce" – which KFC officials said is a "zesty mayonnaise" - slathered between two chicken filets, either original recipe (540 calories and 32 fat grams per KFC.com) or the slightly slimmer grilled version (460 calories and 23 fat grams).

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