Portland chef creates pizza using White Castle sliders

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PORTLAND, Ore. -- A chef in Portland is becoming known for his crazy combinations of food including his most recent version of pizza.

It's a White Castle pizza.

The crust is made out of the White Castle burgers. The pizza is then topped with cheese, onions and mushrooms -- items found on the White Castle slider.

The chef, Tym Bussanich, uses his Instagram to share these recipes with his foodie fans. he has already accumulated more than 21,000 followers for his weird food concoctions.