First the important thing
Next, do you remember me talking about seeing a YouTube tutorial about fabric impregnated with wax to use as reusable food covers? There's a link to one of them here and another here. You can even buy them ready made, though I didn't find many links about how to clean them.
Today I was ready Dorothy Hartley's book on medieval England. She was definitely someone who understood the real world, so while she may have spent her life poring over manuscript illustrations and accounts she could also relate to how thatching or drying feathers or cutting bracken fitted into to rural life centuries ago. According to her, they soaked linen cloth in beeswax to make food coverings over four hundred years ago.
Truly there is nothing new under the sun.