Leave to set then break into shards. To assemble, unroll the cooled Swiss rolls and spread with the lemon curd. Roll back up again and slice one into 2.5cm/1in slices and place upright around the ...

I originally tested this with lemon curd, but quickly rethought that decision because that stuff just is not helpful. Delicious, yes, but not in the construction of a swiss roll cake. It can also ...