Hi darius,
I was giving the caerphillies a wipe with brine, or surface salting and then wiping them with the brine that forms 12 hours later, a few times a week. That's probably what helped keep the mold in check then.
Hmm, cheese slices, eh? I've made a cheese called "Butterkase" (German for Butter Cheese), which is supposed to be very mild, and good in things like grilled cheese sandwhiches, etc (i.e. mild, moist, and melts). I've only just made it this past weekend, but it should be ready in 3 or 4 weeks. It's not a difficult make, slightly easier than caerphilly as it doesn't have the stacking and milling, although it does include washing the curds but that's fairly easy to do (drain some whey and add hot water in with the curds). When I taste it I'll report on it, and it may be one that you might like to try out as it may be one your sister will enjoy? Also, do a search on "Dunlop" cheese. It's a fast ripening cheddar type of cheese, that again, is probably no more difficult than caerphilly.
- Jeff