Tim and Simon learn about the science of sound. Simon cooks chilli aubergines with smoked feta. Guest chef Clodagh McKenna makes raspberry and rosewater pavlova. I See Rivers Perform live.
Tim and Simon meet the director of Diego Maradona. Simon makes hake with sarde and white chocolate and banana blondies. Guest chef Asma Khan makes chicken chaap with parathas. Hamzaa performs live.
Tim and Simon learn about the book Our Universe. Simon makes smoked haddock and avocado pâté. Guest chef Masha Rener cooks pasta alla Norcina. Dodie performs live.
Guest chef Nisha Katona cooks broccoli and onion bhajis, while Jack Sturgess cooks chargrilled sea bass with vanilla vinaigrette. Karina Elias shares some Spanish wines. And Mabel performs live.
Tim and Simon learn all about coral. Simon cooks a tiropita and a strawberry and elderflower fool. Guest chef John Gregory-Smith makes beef skewers. Mini Mansions perform live.
Tim and Simon learn about Van Gogh. Simon makes chilli cheese flatbreads. Guest chef Sophie Michell cooks slow roasted pork tacos with watermelon pico de gallo. The Amazons perform live.
Tim and Simon learn about the science of fate. Simon makes a cauliflower biryani salad. Guest chef Paul Askew makes bruschetta with asparagus and potted shrimps. Self Esteem performs live.
Tim and Simon learn about the history of writing. Simon makes a beef and pickled onion sausage roll. Guest chef Angellica Bell makes a Caribbean chicken curry. Robinson performs live.
Tim and Simon learn about prosthetic makeup. Simon makes salted caramel and chocolate doughnut bread and butter pudding. Guest chef Tom Brown cooks monkfish, while Ten Tonnes perform live.
Rodrigo Y Gabriela perform for Tim and Simon. Simon makes blueberry and bacon scones and a bonet for pudding. Guest Chef Omar Allibhoy cooks paella de marisco. Bear's Den perform live.
Tim and Simon learn about Brazillian jiu-jitsu. Simon cooks lamb and yoghurt soup and a banana and chocolate tart. Guest chef José Pizarro makes Iberian pork burgers. Becky Hill performs live.
Tim and Simon learn all about bells. Simon makes sour curry with prawns and sweet Yorkshire puddings. Guest chef Theo Randall cooks beef sirloin with fritto misto. Lewis Capaldi performs live.
Tim and Simon meet the folk band Fisherman's Friends. Simon cooks Sri Lankan style mussels. Guest chef Sophie Michell makes a blood orange meringue tart. Circa Waves perform live.
Tim and Simon learn about gene eating. Simon makes smoked mackerel panzanella. The Galvin Brothers make cured salmon with crab, fennel and avocado cream. Maverick Sabre and Jorja Smith perform live.
Tim and Simon learn how to Irish dance. Simon makes vegan peanut butter breakfast pancakes with coconut 'bacon'. Guest chef Clodagh McKenna cooks soda breaded pork chops. John Newman performs live.
Tim and Simon learn about stained glass. Simon makes a tomato and okra salad and a tropical loaf. Guest chef James Martin cooks deep-fried plaice with brown crab mayo and lemon. Dido performs live.
Tim and Simon meet some Crufts dogs. Simon makes a coastal prawn curry and an Anzac caramel bake. Guest chef Tom Kerridge cooks chicken and pearl barley soup, while Grace Carter performs live.
Tim and Simon learn about the history of lighthouses. Simon makes an old school chocolate fudge cake. Guest chef Jeremy Pang makes Chongqing chicken in lettuce wraps. Sam Fender performs live.
Tim and Simon learn about t'ai chi. Simon makes a burnt sweet potato salad and rugelach, while guest chef Jack Stein cooks Welsh rarebit. Freya Ridings performs live in the studio.