Step 1

Place all ingredients in a covered jar and allow to sit for a couple of days so that the seeds soften.

Step 2

Over the course of a couple of days, the seeds will absorb almost all of that liquid. If the liquid is completely absorbed and your seeds look a little dry, add a bit more water.

Step 3

After a couple of days, process the mustard. If you like a seedy mustard, you can use an immersion blender. For a less seedy mustard, pour the contents of the jar into your blender and process until the mustard is the desired consistency. Less if you like it grainy, more if you prefer it creamy. Put the finished homemade mustard right back into the jar the seeds were in. Not even a jar to wash!