Here is the recipe for the doughnuts.
100g unsalted butter
1 tsp caster sugar
150g gluten-free flour
1 tsp xanthan gum
100g grated parmesan
4 eggs – beaten
Put the butter+300ml water+sugar into a saucepan and bring to boil (make sure butter has melted), then turn heat down and simmer.
Mix flour+xanthan gum+a pinch of salt then add to the butter mixture and beat well with a wooden spoon until you have a smooth paste. Remove from heat and place on a steady surface.
Add parmesan to the mixture and mix in , then slowly add the eggs in several batches, mix with the wooden spoon or electric whisk if you have one. After adding a bit of egg mix until incorporated and so on until you add all the eggs. You’ll now have a smooth, sticky, thick batter.
Deep fry the doughnuts until golden. Serve with grated parmesan.