In constructing a marrow bone pie, one of the layers is “souls of artichokes”. I find the expression very evocative. But I find the expression nowhere else at present. It may yet catch on in some fancy circles.
[…] marrow of beef mixed with currants; then upon it a layer of the souls of artichokes, after they have been boiled, and are divided from the thistle […]
The Well-Kept Kitchen Gervase Markham [excerpts from The English Housewife (1615)]
And so for day 1511