They’re ultra-crispy on the outside and perfectly fluffy inside.

RememberDirty Martini PastaandChippy Boys?

But thispotato recipemay take the top spot as our favorite viral recipe.

viral 15 hour potato

Credit:Rachel Marek. Prop Styling: Addelyn Evans

TikTok creator@poppycooksfirst introduced use to the recipe, which has been on restaurant menus for years.

Our take on 15-Hour Potatoes are cooked low and slow in beef tallow before being fried until golden brown.

Serve them with our spicy horseradish dip, or try topping the potato cubes with creme fraiche and caviar.

What Are 15-Hour Potatoes?

15-Hour Potatoes are made with thin layers of slicedrusset potatoesthat are slowly cooked in beef tallow.

Once out of the oven, the potatoes are chilled overnight before being sliced into cubes and fried.

The finishedpotato recipeis crispy and golden on the outside and tender and fluffy on the inside.

Slice Potatoes

Peel and slice the potatoes lengthwise using a mandoline, to 1/16-inch.

Place in a extra-large bowl; cover potatoes with water.

Add the cider vinegar.

Gently stir and let stand for 30 minutes.

Drain well and pat very dry.

Preheat oven to 250F.

Add Beef Tallow

Return potato to the same bowl.

Add beef tallow, and salt.

Gently toss to coat.

Layer Potatoes

Arrange slices layer by layer, filling gaps in the previous layers as you go.

Cut a piece of parchment to fit over the top of the potato layers.

Bake

Bake 3 hours or until fork tender.

Chill Overnight

Remove top parchment paper, cover potatoes with plastic wrap.

Place a second loaf pan of the same size on top of the potatoes.

Weight with several cans of food.

Chill in the refrigerator 12 hours.

Cut

Remove weights.

Lift potatoes form pan using the edges of the parchment.

Cut the stack of potatoes into 32, 1-inch pieces.

Fry and Serve

In a deep, heavy saucepan, heat 1 1/2-inch of oil to 375F.

Fry 6 to 8 potato pieces at a time until golden brown and crisp, 3 to 4 minutes.

Sprinkle with additional salt.

Serve with Horseradish Sour Cream.

2,000 calories a day is used for general nutrition advice.