As an additional window on the history of our most basic foodstuffs I have compiled a list of etymological first-use.
It was here but I now have placed it here where it is easier to maintain and edit.
My main interest is in the geographical origins and spread of crops and I wanted to see if pulling dates from the Online Etymology Dictionary would give insight in the historicity of everyday supermarket products. Etymology is not an exact science and dates are for modern English and especially for older dates it does not mean that the thing named was not known before that. It does allow to see the way new foods from the Americas and elsewhere are introduced to the European menu as trade networks start to span the globe from 1400 onwards and after 1500 especially.
These etymological word maps also contain much food names.