The Secret To Perfectly Crispy Roast Potatoes Is This Unexpected Ingredient (You Probably Have It On Hand)

There’s nothing quite like biting into a hot, perfectly crispy roasted potato. If you’ve been craving the kind of crispy-on-the-outside, tender-on-the-inside potato that’s a hallmark of great pub fare, Tasty Creator Joelle Park's trick can help you recreate that magic in your very own kitchen.

Person holding a bowl of crispy roasted potatoes garnished with herbs and grated cheese, smiling in a cozy kitchen setting
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The best part? You don't even need a deep fryer; everything comes together in your humble oven.

It all starts with boiling your potatoes before they go into a hot (425°F/220°C) oven to roast. During this first cooking step, a surprising ingredient — baking soda — elevates these potatoes to the next level.

Water pouring over diced red potatoes in a pot
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Adding baking soda to the water raises its pH (making it more alkaline and less acidic), and as the potatoes cook in alkalized water, the starches in the potatoes' exterior break down.

Hand holding a small bowl of baking soda over a pot with potatoes. Text reads: "1 tsp baking soda."
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The starchy outer layer of the potato forms a kind of skin that is broken down even further and made even more textured as they are tossed vigorously in a strainer. To avoid any potential mess, you can also shake the potatoes in a large, lidded bowl.

Person tossing chunks of peeled potatoes in a colander in a kitchen setting with shelves in the background
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Look at all that starchy goodness ready to crisp up!

Boiled baby potatoes with skin on, cut into halves and scattered on a metal surface
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Garlic-infused oil coats the jagged surface of the potato, which crisps up and browns in the oven when roasted for an hour.

Garlic cloves and halved baby potatoes in a dish being coated with olive oil
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After roasting for half an hour, toss the potatoes and continue to cook for another half hour to ensure all sides of the potato brown evenly.

Roasted potato cubes being stirred on a baking sheet with a spatula
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Your results will look like this: shatteringly crisp on the outside with a plush, velvety interior.

Close-up of hands holding a golden, crispy roasted potato
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To make these ultra-crunchy taters (and hundreds of other potato recipes), download the free Tasty app and search for Elephant Garlic Crispy Pub Potatoes.

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