A medieval spicy sauce recipe found at cookit.e2bn.org
Mustard was much used by the Romans and later was very popular with the Anglo Saxons. It grew locally and so was cheap. It could be used to makes sauces for meat and fish as well as dressings for salads. It helped to preserve other foods as well as having healthy properties of its own.
The sauces were generally made from a mixture of ground mustard seeds, vinegar, wine and often honey, with spices or other flavourings added according to what people liked.
They could then be stored for several weeks. Mustard’s ‘hotness’ gets less after it is mixed and kept for a few days, which may account for the strength of the sauces often made – which would be much too hot for most of us today.