A Simple Homemade Whole Grain Mustard Recipe

Homemade Mustard Recipe

When we first started making our own condiments, a mustard recipe was one of the first we tackled.

It is incredible how easy it is to make homemade mustard. And once you have the technique down you can vary it however you like!

One of our favorite varieties is a spicy whole grain mustard.

Something about that two-toned, slightly textured, boldly flavored mustard would always win us over spread on anything from turkey sandwiches to burgers and brats.

Homemade Mustard From Whole Mustard Seed

I always prefer to use whole spices when possible. I find that the flavor of whole spices is just so much more fresh and potent compared to pre-ground versions.

Once you grind spices, you release their oils, and over time they can go bad or at least lose their potency. And unless you have a good spice shop nearby, you don’t really know how long those ground spices have been hanging out on the store shelves.

So, while you can make easy homemade mustard from mustard powder, I always like to start with whole mustard seeds.

(When it comes to mustard, you don’t even need a spice grinder to get into those whole seeds. So there’s even more reason to start whole!)

Making a Whole Grain Mustard Recipe

The one thing about homemade mustard with whole mustard seeds is that it does take a bit of planning ahead.

Since we’re not breaking those tiny seeds down with a spice grinder, we have to soak them overnight to get them soft enough that we can transform them into tasty mustard.

Also, once your mustard is made, it is typically quite strong.

If you like strong mustard, feel free to use it right away, but we have found that letting the mustard mellow in the refrigerator for 2-3 days is just perfect for getting the whole grain mustard flavor we love.

Don’t Rush Your Homemade Mustard!

I’ll admit, there are a number of times when I have forgotten that we were out of mustard, and I have rushed the mustard process by heating the seeds in their soaking liquid.

True, heat will cause the seeds to soften in a matter of minutes rather than hours. And it does mellow the spicy mustard flavor in hours rather than days. But, we always noticed that these heated mustards tasted a bit off, somewhat bitter, even after mellowing for a week or more!

Then I learned that heat activates an enzyme in the mustard seeds that kills those little seeds’ flavor!

So, while hurrying the soaking process with hot liquids will work, you’ll always end up with sub-par mustard.

Homemade Mustard Recipe (Whole Grain)

Brown (or red) mustard seeds have a more intense flavor than the yellow variety, so using both in this mustard gives it a nice spiciness that is balanced by the tang and sweetness of apple cider vinegar.

Prep: 5 min (plus 3 days resting time) | Yield: ¼ cup

Ingredients

Instructions

  1. Place the seeds in a small bowl and cover with vinegar and water. Mix to moisten the seeds and let the mixture stand on your counter, for at least 6 hours (or overnight).
  2. When the seeds are ready to make mustard, they will look like they have swollen. Place roughly ⅔ of the soaked seeds in the bowl of your food processor with the soaking liquid and salt. Process until the mixture thickens.
  3. Add the remaining seeds and blend until the mixture is your desired consistency, with some whole seeds remaining.
  4. Transfer the mustard to a sealed container and let it mellow in the refrigerator for 2-3 days before using.
  5. Homemade mustard will keep in the refrigerator for 1-2 months.

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Sarah Ozimek

About Sarah Ozimek

Sarah is a writer, recipe developer, traveler, gardener, and lover of (almost) all things outdoors. Together with her husband Tim, she writes the blog Curious Cuisiniere where they explore world cuisines and cooking using real ingredients and tried and true methods, the way our ancestors have done for ages. Connect with Sarah on Instagram, Facebook, Twitter, and Google +.

A Simple Homemade Whole Grain Mustard Recipe was written by Sarah Ozimek.

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