Leaving a margin clear across the top of the roll, spread a thin layer of lemon curd and then a layer of whipped cream. Gently roll it up again, carefully peeling away the paper underneath as you go.
Almonds give this lemon polenta cake a wonderful richness and crumbly texture. Served with zesty lemon icing, orange mascarpone and caramelised satsumas. Preheat the oven to 160C/325F/Gas 3.