Who Needs McDonald's? Burger King Says It Will Partner With 4 Other Chains on Peace Day

Burger King may not have been able to lure its biggest rival into a charity-minded collaboration, but four other chains have stepped in to fill the McWhopper void.

Denny's may be the largest and best-known of the lot, but the fast-casual chain will be joined by Krystal (a Southern chain similar to White Castle), Wayback Burgers and Giraffas (a Brazilian chain with 10 Florida locations) in offering Peace Day co-branded burgers on Sept. 21.