Whisk all ingredients together into a big bowl. Put 1/2cm of sunflower oil into a muffin tray, then place this on the middle shelf of your oven at its highest setting (240–250ºC/475ºF/gas 9). Place a larger tray underneath it to catch any oil that overflows from the tin while cooking. Allow to cook for about 10 minutes, you will see when they begin to rise and go nice and golden.