Homemade horseraddish sauce - has anyone got a recipe please?

[saythatagain]

I've got my fingers and toes crossed that they've still got them in Lidl; I tried a friend of mines version years ago and can still remember how absolutley delicious it was but for the life of me I can't remember what was in it!

Cold Horseradish Cream
Makes approx 150ml.
125ml double cream
2 x 15ml spoons of fresh grated horseradish
1 x 15ml spoon white wine vinegar or lemon juice
1 x 10ml spoon caster sugar
1/2 x 2.5ml spoon made English mustard
salt and pepper

Whi[ the cream lightly unsil semi-stiff. Carefully fold in the other ingredients. Chill until ready to use.
Serve with beef.

Hot Horseradish Sauce

250ml white sauce, made with milk or half milk and half white stock
2 x 15ml spoons grated horseradish
1 x 5ml spoon vinegar
1 x 2.5ml spoon sugar

Heat the sauce, if necessary. Add the horse radish, vinegar and sugar and stir well. Serve with beef, trout, mackeral or herring.

Thank soooooo much - just hope that they've still got some left; I could kick myself that I didn't bother last time I was !