Burger King is constantly pushing the limits of its menu with interesting mashups, from Mac & Cheetos Fries to its Whopperito. Their thirst for innovation is consistent and is evident again with rumors of a Kellogg's Froot Loops Milkshake.
Burger King has not confirmed it, but it looks like they've been testing the shake in New York, as an Instagram user posted the photo below 64 weeks ago.
This wouldn't be the first time Burger King dropped a new food item without really publicizing it. In 2015 we got a tip about their Frozen Surge drink, and it turned out to be true. They were pretty hush hush when their Chicken Fries released as well.
While Burger King hasn't had many collaborations with Kellogg's, their veggie burger is made by MorningStar, who is owned by Kellogg's.
Burger King hasn't made a peep about the shake, so we'll keep our fingers crossed until April 17 and see what happens.