About Homemade Mustards Preparing your own mustard from seeds is a cooking adventure - and a source of gifts from your kitchen. Somehow, homemade mustard is even more impressive to most people than homemade preserves, although it is far easier to prepare - it is simply stirred, not cooked.
Mustards have good keeping power in the refrigerator, and mellow with time.
About 2 cups Use this mustard paste as is, or add one of the various recommended flavorings. This is wonderful spread in cold meat sandwiches, particularly roast beef, corned beef, or cold pork. If you want a smooth mustard, leave out the mustard seeds and triple the amount of dry mustard. This mustard will keep, covered and refrigerated, for up to 2 to 3 weeks.