Potatoes are the star of the Sunday roast, but if you get them wrong, it can be disastrous. The perfect roast potatoes should be golden and crisp with a light, fluffy interior.

However, this can be hard to achieve consistently . That’s why Stephen Parkins-Knight, a senior brand innovation chef at Waitrose, has shared his top tip for the perfect potatoes every time. If you use this tip, you can expect potatoes that everyone loves.

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Many people swear by salt for their potatoes, but Parkins-Knight says that baking soda is a better addition. He recommends adding half a teaspoon of the baking soda to the water you are using to par-boil your potatoes.

Boil

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