Pour flour, salt, yeast and sugar into a large mixing bowl and mix together until evenly distributed.
Gently rub the butter into the flour mixture, just enough to break it up.TIP: Gently rub the butter into the flour, you’ll want chunks of butter rather than the mixture resembling breadcrumbs. Pour lukewarm water and an egg into the mixing bowl and mix together. You may need to bring the dough together with your hands.
Then cover the dough with cling film and leave the dough to rest for 30 minutes.
Lightly flour your work-surface and place the dough on top. Roll your dough into a long rectangle shape, then fold the two ends into the middle. Then close the dough together like a book, repeat this step 3 to 4 times.
Place the dough back in the mixing bowl and cover with cling film. Leave to rest for 30 minutes.
Roll the dough again into a long rectangle, cut the dough into 16cm long strips. Then cut a line in the middle of each strip, leaving a 2 cm gap of dough at both ends.
Twist each strip into a twirl, watch the video on how I did this. Place the twisted strips onto a lined baking tray, cover with cling film and leave to double in size for at least 45 minutes.
Make the icing mixture by mixing together icing sugar and water. Do this towards the end of the 45-minute resting time.
Fry the yum yums on a medium heat for 2 minutes on both sides or until golden brown. Once each yum yum is done, place on a cooling rack and immediately coat in the icing mixture.Don't forget to turn the yum yum over and coat all sides.