At last I can do a post about something other than DK.
Last night I had another go at tempura batter with a reasonable amount of success. I did some cod slices that were OK, but I don't think the oil was deep enough and there was no more in the cupboard. The main success were the tempura basil leaves that were light, crispy delicious and very poncy. I also tried some onion rings that were pretty good and some boiled carrots that were, at the very least, improved by the coating of crispy batter.
Sorry there aren't any pictures to enjoy thins time, but I'm pretty sure I'll try it again at some point.