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Mustard does not need to beMustard does not need to be canned. Most recipes use ground mustard seed and powder mixed with vinegar/wine and salt. Herbs and other spices can be added. Search for homemade mustard recipes online.

2015 Special Edition Garden GuideCooking Fresh with The Old Farmer's AlmanacThe Almanac Monthly Digital MagazineWhat the heck is a Garden Hod?