To dream of horseradish, foretells pleasant associations with intellectual and congenial people. Fortune is also expressed in this dream.

For a woman, it indicates a rise above her present station.

To eat horseradish, you will be the object of pleasant raillery. ... Ten Thousand Dream Interpretation

Horseradish is made into a condiment that has a pungent taste. It may point to a poignant statement that was made in an important conversation. It may mention that you have made too strong a statement.... Ariadne's Book of Dream

To see or taste horseradish in your dream suggests that you have made an overly strong statement. You may offend others without knowing it.... My Dream Interpretation