Chef Oli Brandon revealed his secret ingredient to make the "best roast potatoes" ever. Undergoing the pseudonym @theptchef on TikTok, the chef bit into his freshly made potato, describing the crunch as the "the sound of the best roast potatoes you've ever had".

In a step-by-step guide, Oli explained: "Put one teaspoon of baking soda and salt into boiling watering, then cook your potatoes until fork tender but not falling apart."

The key ingredient - baking soda - is added at this exact point to help break down the starch in potatoes known as pectin.

This helps to create a crispy potato surface and helps them to become a lovely shade of golden brown once cooked.

Once the potatoes are tender, it's time to drain the water and fluff up the potatoes in a colander.

Chef Oli instructed: "Next, finely chop rosemary and garlic and add into a pan with lots of olive oil. Toast these until lightly golden brown and then drain the oil off all over the potatoes."

Reserve the chopped rosemary and garlic, as the oil is poured over the potatoes that are in a roasting tray.

The potatoes are then seasoned with salt and black pepper, before being put in a preheated oven and baked at 180C for 20 minutes.

Once the 20 minutes are up, the potatoes are carefully turned over and put back into the oven for another 20 to 30 minutes "to make them super crispy".

The roasted potatoes – once fully cooked – are then garnished with the reserved garlic and rosemary, and some more salt.

Gaining more than 100%,000 likes on his video on the social media platform, people flocked to the comment section.

"Never craved something so much in my life," one fan gushed. "I don’t normally like potatoes but these... these I want," another exclaimed.

Another added: "I made these the other day and they were so nice, better than my mum's and that’s saying something."