The focus shifts to store cupboard ingredients, assessing how people can shop healthily and spend less when it comes to jars, cans and packets. Sian Williams lifts the lid on tinned food, which has seen sales soar since the start of the pandemic, and challenges the Wilkes-Malones to a blind taste-test to see whether they prefer the taste of canned food or the fresh equivalents. Stefan Gates visits London's last working windmill to discover how wholemeal flour is made and sorts the wheat from the chaff when it comes to the best flours to use for home cooking.