St John doughnuts

Makes 25
strong white flour 500g
caster sugar 65g, plus extra for coating
salt 10g
fresh yeast 15g
large eggs 4
lemon grated zest of 1
water 155ml
softened unsalted butter 125g
sunflower oil for deep frying

Place all the ingredients except the butter and oil in the bowl of a mixer fitted with a beater. Mix on medium speed for 6 minutes, then scrape down the sides of the bowl. Mix on medium speed again, adding the butter, 20g at a time, until all is incorporated. Keep mixing for 6-8 minutes, until the dough has come away from the bowl and looks smooth, glossy and elastic.

Place the dough in a large bowl, sprinkle the surface with flour and cover bowl with a tea towel. Leave to rise for 2-3 hours in a warm place, until doubled in size, then knock back. Cover the bowl with clingfilm and place in the fridge for at least 4 hours, or overnight.

Cut the dough into 25 pieces and roll into smooth balls. Place on floured baking sheets, leaving 5cm between each one. Cover with clingfilm and leave to prove for 2-3 hours to double in size.

Half-fill a deep fat fryer or a deep, heavy-based saucepan with sunflower oil and heat it to exactly 190C. Fry the doughnuts, in batches of 3 or 4, until golden brown, about 2 minutes on each side. Check the temperature of the oil between each batch. As the doughnuts are done, place on kitchen paper to soak up excess oil, then toss in caster sugar.

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