put egg yolk, bi carb and 1 cup of ice water in a bowl
beat in the flour with chopsticks or a wooden spoon
add more water to make a runny batter - thin with some lumps
set up a draining rack with lots of absorbent paper town
preheat oven to 100C to keep tempura warm while rest is cooking
put about 500ml oil in wok and bring to boil - test temperature by dropping in a small amount of batter - it should tuurn golden in under 1 minute
dip each vegetable in batter individually and deep fry 1 minute on each side in batches - don't overfill the wok
remove and drain, then place in oven to keep warm
serve immediately with rice and soy dipping sauce
Notes
keep the batter cold - the greater the temperature change the crispier the batter, use the batter ASAP after making
eat the tempura ASAP after making it tastes best hot and the batter goes soggy quickly as it cools
Good things to tempura: pumpkin broccoli eggplant - this is a sponge it soaks up all the oil sweet potato carrot capsicum beans anything else in season