To make good tempura at home make sure the batter and the vegetables/prawns are very cold. Also, because you want to drain the tempura well once cooked and not let it get soggy, I drain it on a cake rack in a baking dish above paper towels.
To flatten prawns make a shallow cut along the back and press down on the whole prawn to flatten it.
IDKhonestly i cant cook and this is not for me it didnt taste good even though i did wat i must i did not taste good at all sorry to put ur thing down but yeah - 21 Oct 2016