I was picking some of my Red Cabbages yesterday. Most are a beautiful ruby red however one had lots of white areas on the leaves. It looks healthy otherwise but I wondered if it is some kind of deficiency? This is the first time I've grown red cabbage so I haven't seen it before. The outside leaves were normal but holey!
I was going to suggest frost damage as that can whiten the leaves of brassicas but if they look healthy enough then maybe some for of albinism - lack of pigmentation, and probably nothing to worry about
I don't think it's frost damaged the leaf looks very normal I thought it would be a nutrient deficiency probably one involved in anthocyanin production. Just wondered if anyone else had it?
I'm going to eat it anyway.
I've spotted this on mine too, will try and take a photo this weekend