Lasting supper

This is a great story about “portion sizes” increasing over the centuries in “Last Supper” paintings, but I haven’t been able to get the paper yet.

The Cornell University team studied 52 of the most famous paintings of the Biblical scene over the millennium and scrutinised the size of the feast.
They found the main courses, bread and plates put before Jesus and his disciples have progressively grown by up to two-thirds.
This, they say, is art imitating life.

I wonder, though, how much of the “bread size grew by 23%” and “plate size increased by 66%” might be technological rather than merely food preference-caused. They introduced different plate production and bread production methods over time (not sure if all the breads are unleavened, either).