Recipes That Made Me: Punjab, BBC2, 8pm
IT’S no secret that immigration has made a big impact on British cuisine. But how do UK home cooks with their roots in the Indian subcontinent keep their family recipes and traditions alive? Restaurateur Nisha Katona finds out in this series, which begins with her travelling to the West Midlands, which has the largest population of Punjabis living in the UK. She learns more about the ingredients and techniques that give Punjabi cuisine its rich dishes, and discovers that the high-calorie food could be linked to the region’s ancient warrior culture. In the second half of the opening double bill, she heads for London to learn why Sri Lankan food is gaining in popularity.

Orangutan Jungle School, Channel 4, 8pm
NEW series. Following the lives of orphan orangutans in the Nyaru Menteng Orangutan Rescue Centre in Borneo, Indonesia, the largest orangutan rehabilitation centre in the world. The programme follows the team of devoted staff as they help orangutans displaced from their habitat or kept as illegal pets learn the skills necessary to survive once they are returned to the wild. In the first episode, the programme introduces some of the big characters in the centre, including “class clown” Valentino.

The Real Marigold Hotel, BBC1, 9pm
BOB, Susan and Selina want to see more of rural Rajasthan and head into the hills to go horse riding and camping. Meanwhile, Stanley the adventurer relives his youth on the back of a motorcycle. Later, a sleeper train takes the group to Navratri, one of India’s biggest annual festivals.

The Bletchley Circle: San Francisco, STV, 9pm
AFTER a seemingly innocent man is charged with murder, the women become involved in a tangled suburban tragedy, racing to find the true killer and the methods before the scent goes cold. Meanwhile, Jean grapples with how to build a new life. Drama set during the social change of the mid-1950s, following four women gifted with extraordinary intelligence, capacity for pattern recognition and decryption. Drama, starring Crystal Balint, Rachael Stirling and Chanelle Peloso.