Horseradish sauce is great with roasts and on its own or even mixed with mayonnaise. Homemade Mayonnaise
500g Horseradish root, cleaned and grated
1 cup vinegar
1 tsp salt
2 tbs sugar
1 tbs black pepper
2 beetroots cooked, peeled and grated.
Combine all ingredients into a glass bottle and seal. If there is not enough liquid add more vinegar.