Sharp Horseradish Sauce

Directions

1. 1
   Peel and, using a hand grater or the fine grating disk on a food processor, finely grate the horseradish.
2. 2
   (The food processor is easy, but there will be a lot of waste, so start with the larger amount, at least a 6-inch piece.
3. 3
   Also, avert your eyes when you first turn on the machine.)
4. 4
   Combine the grated horseradish with the vinegar and some salt.
5. 5
   If the mixture is thick but sharp enough, thin with a bit of water.
6. 6
   Serve immediately or store, tightly covered, in the refrigerator.
7. 7
   Horseradish loses potency over time, but this will stay pretty strong for days if not weeks.