This is a delicious tempura batter you can make when you don't have any tempura flour on hand.

This is easy and crispy! Apparently, it's also good with some mayonnaise mixed in. The vinegar helps to make it crispy. Vinegar and mayonnaise will not affect the taste. It'd probably be even better if you added some katakuriko! You could also add a little joshinko as well. Recipe by Aoimama