MasterChef S21E20 18 September 2025 on BBC One

On Thursday 18 September 2025, BBC One broadcasts MasterChef!

Season 21 Episode 20 Episode Summary

The excitement builds as “MasterChef” heads into the semi-finals on BBC One. In this thrilling episode, the remaining six cooks face a challenge set by the renowned chef Heston Blumenthal. Known for his innovative approach to cooking, Blumenthal is a pioneer of molecular gastronomy, and his influence promises to push the contestants to their limits.

As the cooks step into the kitchen, they will have to embrace the science behind cooking. This means experimenting with textures, flavors, and techniques that may be unfamiliar to them. The pressure will be high as they strive to impress both the judges and Heston himself. Viewers can expect to see creative dishes that blend traditional cooking with modern techniques.

This episode is sure to be filled with tension and excitement. Each cook will need to showcase their skills and creativity to stand out in this crucial stage of the competition. With Heston Blumenthal’s guidance, the semi-finals are set to be a memorable showdown. Fans of “MasterChef” won’t want to miss this unique opportunity to see how these talented cooks rise to the challenge.