第 4 季 共 9 集
播出时间：2018年7月18日
第 1 集 Coffee
播出时间：2018年7月18日
Gregg Wallace is at a coffee factory where they produce 175,000 jars of instant coffee every day. He follows the production of freeze fried instant coffee, from the arrival of 27 tonnes of Brazilian green coffee beans right through to dispatch.
第 2 集 Toilet Roll
播出时间：2018年7月25日
Gregg Wallace explores the Manchester factory that produces 700,000 toilet rolls a day. He begins with 940 miles away in Sweden where the raw materials, wood, is harvested from a sustainable forest of one billion spruce trees.
第 3 集 Sausages
播出时间：2018年8月1日
Gregg Wallace explores the North Yorkshire factory that produces 625,000 sausages a day. Meanwhile Cherry Healey is at the University of Chester getting the scientific lowdown on getting the best from your banger. Ruth Goodman is investigates how a German bratwurst became top dog.
第 4 集 Curry
播出时间：2018年8月15日
Gregg Wallace explores the Nottinghamshire factory that makes 250,000 jars of curry sauce each day. Meanwhile Cherry Hawley is in Guntur, the chili capital of India, where they sell 3500 tonnes of chili each day.
第 5 集 Potato Waffles
播出时间：2019年2月27日
Gregg Wallace is in Lowestoft at an enormous frozen food factory, where they produce one million potato waffles a day.
第 6 集 Pizza
播出时间：2019年3月6日
Gregg Wallace is in Italy at an enormous pizza factory, where they produce 400,000 frozen pizzas each day.
第 7 集 Beer
播出时间：2019年3月13日
Gregg is in Burton upon Trent at Britain's biggest brewery. Cherry learns how 4 basic ingredients can be used to make such a wide range of beers. Ruth asks why Burton became the centre of British brewing.
第 8 集 Pencils
播出时间：2019年3月20日
Gregg Wallace is in Germany at a historic pencil factory where they produce 600,000 writing implements a day.
第 9 集 Cheese
播出时间：2019年3月27日
Gregg Wallace is in Gateshead at a cheese factory where they produce 3,000 tonnes of spreadable cheese every year.
