There is a small brush pile in my chicken run that filled in with weeds and one of said weeds was mustard! The bees love it! I sampled a few leaves and seeds for the fun of it. The leaves are too strong but not surprising in the heat. In a couple months they will be more palatable. The seed on the other hand were remarkably French's yellow mustard like so I thought why not try to make mustard.
I harvested the plants and put them in the garage on a sheet. After a couple weeks they were dry enough to thresh. Mustard is much easier that other grains to separate. The pods chatter easily. After winnowing the seed and chaff in the wind for a while I got a bowl of seeds.
After searching around online the simplest recipe was from Kitchen 101 How to make mustard at home on YouTube. It's equal parts seeds, cider vinegar, and water. Soak seeds over night. I used 2/3 cup of each.
Drain, reserving the liquid, blend until the desired consistency. Add salt to taste. I ended up putting all the reserved liquid back in about a teaspoon of salt and a teaspoon of turmeric. I used Kelly's Magic Bullet blender.
Final product! It taste great but holy cow is it spicy!!! A little goes a long way.