I'm growing International Kidney again. The problems I had with them weren't any different to the problems I have with any new potatoes - the skins come off when I boil them and they go mushy. But like I say, that happens with all of them, Pentland Javelin included. I'm not sure what I'm doing wrong - either growing or cooking. I don't think I feed them enough. I've never yet managed to grow a 'waxy' potato, even when it's a 'waxy' variety!
I'm trying Rocket as well. I've not grown them before and they're meant to be quick, so I thought I'd give them a whirl.