I'm into my Belgian beers which usually ask for candi sugar, and I've tried replacing with normal sugar but the texture is different. Is there something unfermentable in candi sugar/normal white sugar?
My very deep suspicion is that you can replace Belgian Candi sugar with supermarket sugar, derived from cane, beet, corn or whatever. If you want to caramelise it, you could add dark or light brown sugar. Much easier than faffing with it, for sure.