(MONEY.CNN) — Burger King has extended an olive branch to longtime rival McDonald's -- an offer to collaborate on a bold new hybrid frankenburger called the McWhopper. But McDonald's has said no.
"Good morning, McDonald's," Burger King said in a full-page "open letter" ad in the New York Times. "We come in peace. In fact, we come in honor of peace. We know we've had our petty differences, but how about we call a ceasefire on these so-called 'burger wars'?"
Burger King proposed that the two chains combine "the tastiest bits of your Big Mac and our Whopper, united in one delicious, peace-loving burger" that they' would sell on Peace Day, September 21.
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