The special promotion called the “Krabby Patty Kollab,” features a “Pineapple Under the Sea” frosty with pineapple and mango puree swirls, and the famous Krabby Patty burger from the show.
We asked, and Wendy's answered with the following: "Our top-secret Krabby Kollab sauce is a closely guarded recipe that makes the first bite of the Krabby Patty Kollab Burger worth the wait for ...