Whisk the egg whites until frothy
Whisk in the butter and sugar
Whisk in the sourdough discard until you have a smooth batter
Heat a frying pan over low-medium heat. Spoon about 3tbsp of the batter into the pan and allow to spread out like a pancake. Cook for about 5 minutes on each side, until both sides are golden.
Once cooked, remove from pan and quickly wrap to form a cone shape - this must be done whilst still warm or it will crack!
Fill with you favourite ice cream and enjoy!