…Dreaming 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….
Dream dictionary: Horseradish dream meanings
If you eat a horseradish in a dream, then such dream indicates some kind of statement you have made that is offensive towards the others. Maybe you dint notice that you are hurting other people with your opinions, but the unconscious mind of yours is telling you the truth.
To eat it means disputes among relatives and friends.