A fourteenth century recipe found on Let Hem Boyle
Saara whe runs Let Hem Boyle writes: I have to say that I love mustard! All different kinds of… it can be strong, mild, vinegary, spiced.. I do like them all. Making mustard for an event has been a plan for long time, but I haven’t done it until Midwinter Feast. This recipe is great! You can make it beforehand and store it in the fridge. It will be good stored in fridge for couple of weeks.
Take mustard seeds and waishe it and drye it in an ovene, grynde it drye. Farse it thurgh a farse. Clarifie hony with wyne and vynegur and stere it wel togedrer and make it thikke ynowz. And whan thou wilt spende thereof make it tnynne with wyne.
Original recipe from Forme of Cury, 1390