The English take on a sauce of my country. It makes a thin and potent sauce, which you might prefer evened out by mixing in breadcrumbs - but it is usable as is.
LUMBARD MUSTARDTake Mustard seed and waishe it & drye it in an ovene, grynde it drye. farse it thurgh a farse. clarifie hony with wyne & vynegur & stere it wel togedrer and make it thikke ynowz. & whan þou wilt spende þerof make it tnynne with wyne.