Until the 1940s, for example, ships typically measured the sea's temperature by dunking a thermometer into a bucket of sea water.

ECONOMIST: A heated controversy

Helpful videos are featured throughout, ranging from preparation of dishes to explanations of things like how to calibrate a food thermometer, how to make changes to the school menu, and the reasons for serving free water in the lunch room.

FORBES: How to Cook for the Masses: 'The Lunch Box' Provides All the Tools