Has anyone made their own mustard at home? What are some good recipes & methods?

Mustard as in the stuff you slather on hot dogs, pretzels, etc.

The Various Methods of Making Honey Mustard Receipe

Mustard has become an important ingredient in our daily cooking. Mustard is commonly used as condiment on meat. It is also an ingredient of barbecue sauce. Mustard is also served with Bratwurst and hot dogs
Honey mustard receipe can be made using various methods. .Honey mustard sauce is sweet and delicious. For preparing honey mustard sauce [...]