Finding out what grains medieval England had access to comes from a surprising source: extant thatched roofs, some of which have "roots" going back to the 14th and 15th centuries. The stalks used for thatching—in many cases preserved by fireplace soot—show the presence of bread wheat, rivet wheat, rye, barley, and oats. It was important to cultivate different varieties of grain because their different ripening times and grain yields ensured a steadier supply than cultivating a monoculture.
Bread wheat was the most common wheat grown. Rivet wheat is not grown so much today (although it is considered ideal for pasta), but it made higher quality straw for thatching. Different varieties of wheat were not differentiated in manorial harvest records, however, the word frumentum ("crops" or "grains") being used for any grains meant for consumption. But rather than discuss bread again, or beer, let's talk about pottage.
Pottage, also spelled potage (the word is from Old French pottage, meaning food cooked in a pot), is a thick soup or stew made by boiling grains and whatever vegetables were at hand. If available, meat could be added, but the base was grains in liquid boiled until it became a thick sludge or slurry (those are not culinary terms, but they seem appropriate to me based on my imagining the pottage process).
The boiling would take several hours, and in fact the pottage could be kept on the fire for days, adding liquid and ingredients over time to keep the meal going indefinitely. Upper classes could afford to add meat, but without meat this was a staple peasant dish from the 9th through 17th centuries. The constant boiling ensured it was not only safe to eat but made it easier to eat, the grains being reduced to a porridge-y consistency.
Richard II's cookbook The Forme of Cury had a few pottage recipes, including meat of course, but peasants could alter it with egg yolks, with bread crumbs, or with spices. Frumenty was made by boiling wheat grains until they burst, allowing the mixture to cool, then boiling with broth and milk or almond milk; it could be thickened with egg yolks and have sugar and spices added. Different types of pottage had names like egerdouce, brewet, the thinner ronnyng, and (what I think would be my favorite) mortrews.
The word "pottage" these days may bring to mind the story of Jacob and Esau and the "mess of pottage" given to the hungry Esau in exchange for his birthright. A "mess of pottage" is now used to denote a short term bargain that is detrimental in the long term. Technically, it was a red lentil stew. Interestingly, the knowledgeable Dioscorides warns that lentils were hard to digest and caused nightmares, sentiments that were repeated by medieval authors like the 14th century Pietro de Crescenzi.
Pietro de Crescenzi might have been wrong about lentils, but he has a place in history as the first "modern" agronomist, and it is in that context that I will tell you about him tomorrow.
