How to Plant, Grow, and Harvest Horseradish
Preparing Horseradish for Use as a Condiment
Peel the root and finely grate it, or cut it into cubes and place the horseradish cubes into a blender. Add one or two ice cubes and grind the horseradish until smooth. (Make sure you do this in a well-ventilated room and use eye and nose protection. The smell will be quite pungent.)
Add 1 to 2 tablespoons of white vinegar and a few pinches of salt immediately for mild horseradish. For hot and spicy horseradish, wait 3 minutes before adding 1 to 2 tablespoons of white vinegar and a few pinches of salt.