Ground white pepper should do the trick if you have some. It’s 99% heat and 1% pepper flavor so it would be a good stand in for horseradish. My brain first went to ground ginger but it won’t really be a good sub for horseradish. Though it may taste good given the other ingredients. If you don’t have white pepper, I’d just up the cayenne. It doesn’t have that nostril burning quality to it but it’ll be spicy nonetheless
I didn’t believe you but yeeeeeesh. Lots of self righteous penises ITT. If people buy an expensive hard drive, it should work. Not everyone knows everything there is to know about data storage, have a little grace people