[Sca-cooks] mustard help

[Harris Mark.S-rsve60]

Pani Jadwiga commented:
>>>>
 Aging mustard is certainly documentable, but
I _think_ there are a number of indications in the recipes that fresh
mustard was also sometimes served.
<<<<

More details please. What indications in the recipes point to whether a mustard sauce is  either new or aged? Do particular types of mustard sauces appear to be used new and others aged?

Stefan