Had a slice if this today. The friend who made it got his chestnut flour from another friend who bought it in Italy so I'm not quite sure where you would buy it in the UK. It was odd, it felt very light to hold and handle but had quite a dense texture because if the creme fraîche .
We also ate out in a Tapas bar ( think it was part of a chain) because my friend said they do a lot if GF food. We had non GF and it was really delicious.
Anyway here is the recipe.
Recipe for Chestnut Cake with Lemon & Creme Fraiche
Butter for greasing,
4 eggs separated
125g Caster Sugar
200g Tub Creme Fraiche.
1 large unwaxed Lemon
125g Chestnut Flour,
2 tsp Baking Powder
Icing Sugar for dusting.
Prep time: 15 mins cooking time 35-40 mins 200 deg c or 180 fan
Heat oven and line base of a 20cm round cake tin
Put the egg yolks into a mixing bowl with the caster sugar and using electric whisk
Beat for 1-2 mins until light and creamy. Stir in the Creme Fraiche and Lemon Zest
Add the sifted flour and baking powder(gluten free),
In a separate bowl, whisk 4 egg whites until stiff then fold into the cake mix using the whisk blades.
Pour into the tin and bake for 35-40 mins until the cake feels firm to the touch.
Cool in the tin for 5 mins then turn out and cool completely on a wire rack. Dust
With icing sugar and serve.