Firstly, make sure your milk is lukewarm. I like to use the microwave and heat in 30-second increments. You just want it warm so if you hold your hand against it, it’s not too hot or too cold. If it is too hot, let it cool slightly or it will kill the yeast. If you have a thermometer, it should be between 38-46°C.
In a large jug, mix together the lukewarm milk, yeast and sugar. Leave to sit for about 10 minutes - or until frothy and bubbly. Technically, you don’t need to do this with fast action yeast, but I always like to check to ensure it is active and working.
Next, add the flour and salt to a large mixing bowl. Pour in the milk, followed by the egg, then whisk well until you have a smooth batter.
Cover with cling film or a clean tea towel and set aside to rest in a warm place for about 45 minutes to 1 hour - or until really bubbly and roughly doubled in size. If your house is colder, it might take a little longer. Make sure it doesn’t over-prove or it will develop a sour flavour.
Meanwhile, make the raspberry compote: tip the raspberries into a medium-sized saucepan. Add the caster sugar, lemon zest and 1 tbsp water. Place over a low-medium heat and slowly bring to the boil, stirring occasionally until the sugar dissolves. Once simmering, reduce the heat and cook gently for about 5 minutes - or until the raspberries have collapsed.Remove the raspberries from the heat and add lemon juice, to taste. Adjust the sweetness, if necessary. Pour into a bowl and set aside.
Deflate the yeast batter by knocking out the air with a spoon. Give it a good stir. Add the grated apple and mix well until evenly distributed throughout.
Place a large non-stick frying pan over a medium heat and lightly grease with oil or butter.
Pour the racuchy batter into a large jug or squeezy bottle (or you can use a small cookie scoop, or ladle).
Pour or drop large spoonfuls of the batter, well spaced apart, into the pan.
Cook for about 3 minutes - or until golden underneath and the edges are set. Using a spatula or palette knife, gently flip over and continue to cook for a further 2-3 minutes on the other side until golden on each, puffed up and fluffy. Remove from the pan and place onto a lined plate. Cover with foil to keep warm and repeat with the remaining batter, greasing with more oil/butter, as necessary. You should make around 12 racuchy.
Serve the racuchy warm topped with whipped cream, raspberry compote and a dusting of sieved icing sugar.