sketchy cheese logic
you don't need rennet to make certain types of soft cheese (ricotta, mozzarella, cottage etc.) and besides, if you have dairy animals you should be able to source rennet. Cheese was a luxury item in Rome when the process was first being explored, but by the time of medieval Europe it was quite common place. Checking Dyer's
Standards of Living in the Latter Middle Ages gives me a daily rate for an English thatcher in 1351 as three and a half pence. At the same time, cheese sold for about half a pence per pound. Even the average person should have easily been able to acquire cheese. This story is notorious for its historical inconsistency. (They have large, flawless, cheaply available glass panels at a level only achieved IRL by the early 20th century but no pipes?) Still, this is just bogus.
Edit: Why would they sell safflower mainly to farmers? This is a product of the safflower plant, not the seeds... Safflower has historically mainly been used for dyeing or oil production...
Edit 2: Just checked and Safflower doesn't actually contain chymosin (the active protein in rennet,) a Canadian biotech company has been working on a framework for plant-sourced chymosin from their GMO safflowers, but the method hasn't yet even been commercialized. Most rennet today is bacteria generated.
Edit 3: That's not how you make cream cheese
Edit 4: HALP. Can't wait to go back and check all the previous chapters for egregious errors I missed because I was distracted by fluff and cuteness.