Did you ever make the horseradish cheddar? I have been trying w/out success! I can't find powdered horseradish and commercial isn't working either.
This can be tricky and must be done outside or you will definitely regret it but ... take your horseradish roots and clean them thoroughly. Peel it with a potato peeler if you have big ones knotty ones (but hold it at arms length).
Then OUTSIDE throw it in a blender or food processor and shred it. You can use the ole manual knuckle busters but it will kill your eyes and take your breath away. You want very tiny bits, so the unsuspecting eater doesn't lose his breath when eating your cheese.
Next spread the shredded horseradish thinly on some cheesecloth and lay a piece on top to protect it. Fasten the ends.
Set it outside in the sun for the afternoon and let it dry. You might want to go out every hour or so and give it a shake to get an even drying.
If you have a needlepoint hoop you can lay the layers between that and clamp it shut it works great for drying small bundles of herbs and spices in the sun, or if you have a dehydrator that works well too. Just be careful not to burn it as some dehydrators get very hot.
When all is dry you might want to start with about one tablespoon per pound of cheese as it will be very strong when made from fresh roots. Horseradish is a very underutilized spice IMHO. Once you have a stash of dehydrated horseradish try adding it to things you’ve never tried like soups and stews, breads, nice fresh mayonnaise alone or with a bit of spicy brown mustard (try rubbing that on your next pork roast! Yumm).
Hope this helps!