Fennel Mustard

Directions

1. 1
   In a skillet, heat the oil.
2. 2
   Add the fennel, cover and cook over low heat, stirring occasionally, until softened, 25 minutes.
3. 3
   Add the vinegar and cook, uncovered, until the fennel is tender, 15 minutes.
4. 4
   Transfer to a blender.
5. 5
   Add the water and mustard powder and puree.
6. 6
   Scrape into a bowl and let cool.
7. 7
   Stir in the whole-grain mustard and season with salt.
8. 8
   Transfer to jars, cover and refrigerate.