Saunas, pickled food.. even Nokia phones. But do you associate Finland with the future of food? Sheila Dillon visits the new factory making microbial protein out of hydrogen, oxygen and various minerals. Solar Foods, in Finland, is the latest frontier in the commercial lab-grown food sector; their invention, Solein, is a novel food ingredient that can replace animal products like milk, eggs and meat. Rather than using animal cells as a starting point, their process uses electrolysis to separate water into oxygen and hydrogen, followed by machinery usually found in the dairy industry to dry and then pasteurise the resulting protein powder. After a tour of this futuristic factory, Sheila sits down for lunch cooked by Solar Foods’ head chef to find out how this so-called ‘food of the future’ actually tastes.

Lab-grown meat has been touted as the future for many years, but it has yet to take off – in fact, companies in this space are struggling. Changes to global politics as well as the high cost of scaling up have all limited the sector's growth so far. Meanwhile, it's still not clear if people want lab-grown meat as part of their lives or diets. Sheila hears from Dutch biology and ethics professor, Cor van der Weele, who found that people were more interested in small-scale production of lab-grown meat, in containers alongside animals on farms, rather than scaled up mega factories.

So how does lab-grown meat fit into our future food system? Is it really the best way to reduce the environmental impact of our diets? And how might it help us when climate change or wars make global trade too difficult? Sheila asks professor Tim Benton, of think tank Chatham House, for his views on all the big questions.

Produced by Nina Pullman for BBC Audio in Bristol.