The sponge in this roulade has an pleasant nutty flavour thanks to using toasted flour. It's a baking trick we know we'll keep coming back to. Try it for yourself and see.
Buttermilk is the bakers' secret weapon here, adding a subtle tang to the sweet frosting and contributing to an ultra-tender crumb in the cake itself. Try it for yourself and see.
This simple cake base lends itself to experimentation – use different nuts, or top with another choice of fruit. Slivers of apricot would work well, as would other berries or plums.