We’re living in an age of mashup-food mania, a time in which a new frankenfood unveils itself everyday. To help you keep up with all the new hypebeast snacks on the scene, we’ll be doing a weekly roundup of ridiculous mashup foods you need to know about right now, and ranking them on staying power. Read on!

Sweet Potato + Milkshake = McDonald’s Purple Sweet Potato McShake

Photo: McDonald's/ Rocketnews

The mashup: For fall, McDonald’s Japan is using sweet potato in its milkshakes. And, man, it is refreshing to have a seasonal flavor that doesn’t rhyme with “crunkin’ lice.” If this strikes you as a weird combo, bear in mind that the tubers are a common dessert ingredient in Asia, along with taro and yams.

Staying power: High. According to an Impulsive Buy reviewer, the sweet potato flavor is spot on: “It not only tastes like one, it tastes like one that has been buttered. I shit you not.” With a very cool color to boot, this is bound to be a popular promotional product until the end of its run later this month. (Photo: McDonald’s/ Rocketnews)

Strawberry + Steak + Burger = Tochigi Wagyu Steak Hamburger

Photo: Lotteria

The mashup: Japanese fast food chain Lotteria is running a year-long campaign to promote wagyu beef by putting the fatty, steak-grade meat into its burger patties. The wagyu burger changes each month, highlighting beef from a different region in Japan. The most recent focuses on Tochigi Prefecture, which is famous for—you guessed it—strawberries.

Staying power: Low. The smallish burger costs around $12, which is in line with gastropub prices but expensive by fast-food standards. And Rocketnews reports the strawberry sauce is just béchamel with a touch of jam and strawberry liqueur. If you really want a wagyu burger, go somewhere that doesn’t serve them on stackable plastic trays. (Photo: Lotteria)

Pizza + Slider = White Castle Pizza Slider

Photo: White Castle

The mashup: White Castle’s has announced three limited-edition “Italian” sliders, and by Italian it means a regular slider topped with marinara sauce and mozzarella cheese. (Also part of the promotion: mozzarella sticks with marinara dipping sauce). The pizza slider also has pepperoni, and we’re gonna say it’s a Sicilian slice by virtue of the square-shaped beef patty.

Staying power: Medium. Nothing about this sounds bad, although it’s not the most exciting pizza mashup we’ve encountered. Maybe White Castle can steal Pillsbury’s Pepperoni Pizza Cake recipe for some kind of “Italian” dessert. (Photo: White Castle)

Coffee + Granola Bar = Dunkin’ Go Bar

Photo: Dunkin' Donuts

The mashup: It’s time to stop thinking of granola bars as healthy snacks, because they’re really just slightly more grownup versions of candy bars. We say this because PepsiCo is trying to make granola bars with Poprocks, and Dunkin’ Donuts just started selling a coffee-flavored one. Not that a coffee granola bar sounds bad, but if you’re reading this Dunkin’, why not do away with the pretense of health and upgrade this with a milk chocolate coating?

Staying power: High. The chewy, prepackaged bars are a new permanent item on Dunkin’s Grab N Go menu, which also includes Munchie donut holes and an actually healthy snack, bananas. (Photo: Dunkin’ Donuts)