Also, the amount we spend on food isn't a 1:1 comparison because compared to the 1920s etc we buy much more 'processed food' (e.g. pre-peeled potatoes), which s

Also, the amount we spend on food isn't a 1:1 comparison because compared to the 1920s etc we buy much more 'processed food' (e.g. pre-peeled potatoes), which saves labor in the kitchen but is more expensive.