Michael Mosley: Secrets of Your Food
SBS, 7.30pm

This BBC documentary hits the sweet (and sometimes sour) spot of our food obsession: it has travel elements as various countries are visited, no shortage of luscious food porn as ladled close-ups show us the finished product, and most importantly a scientific breakdown of why we choose to eat – and like – the dishes we put on our plates. With an assist from botanist James Wong, veteran presenter Michael Mosley navigates raw ingredients, with a focus that goes from national dishes to a close-up of the human tongue and its 4000 tastebuds that looks like Ridley Scott's imagination at work. The pair explain, and illustrate by way of enthusiastically noshing down, how aroma and taste molecules create flavour. They find a world of evolutionary wonder in a strawberry and the relationship between bacteria and cheese, and like the vast majority of this series it will leave you hungry. Craig Mathieson

MOVIE
The Trip (2010)
Comedy Movies (pay-TV), 8.30pm

The first The Trip came out of nowhere. Yes, director Michael Winterbottom's previous work had been fascinating and unexpected (from Jude and Code 46 to 9 Songs), but this was a revelation. It is the story of two men (Steve Coogan and Rob Brydon), poised on the edge of friendship, who travel together to northern England to eat at famous restaurants. Sometimes they dine well, sometimes not. As I had an equally dispiriting experience at Cumbria's L'Enclume, for years the No. 1 rated restaurant in Britain, I understand precisely what these men are going through. Between courses, they talk a lot and do endless imitations of famous actors, from Sean Connery and Al Pacino to Mick Jagger (the performance energised by Coogan's flamenco-like hand flicks). Whereas seemingly everyone else is making films based on a dramatically exhausted three-act structure, with predictable peaks and setbacks, this jeu d'espirit is arresting, inventive and fresh. Scott Murray

Modern Family
Seven, 8.45pm