Finely grind the mustard seeds. I have an old coffee grinder for that. Put in a bowl. Mix with the other ingredients and beat everything with the whisk for about 10 minutes.

Fill into a screw jar with a capacity of 250 ml and close tightly. Let it steep in the refrigerator for 3-4 weeks.

That makes 250 milliliters. I had saved such a jar for this amount. He moved 5 weeks. Today for breakfast we tried it with Wiener. It tastes very good to us.