If you've ever assumed that horseradish and radish are just siblings in the root vegetable family, let me stop you right there. These two may share a similar name, but that's about where their ...

Season with salt and pour over the radishes. Leave for at least an hour, then remove and pat dry. Mix the beetroot, apple, horseradish and sour cream. Season with black pepper and salt to taste.

Fresh horseradish is difficult to source. Try a good farmers' market or specialist supplier, or look online. Keep fresh horseradish in a paper bag in the fridge for up to one week, or cut it into ...