Raspberry ricotta cake
By Alison Roman From Saturday Kitchen Ingredients cooking spray, for greasing 220g/8oz plain flour 1 tbsp baking powder 1 tsp salt 365g/12½oz ricotta, plus 400g/14oz to serve 275g/9¾oz caster sugar 3 large free-range eggs ½ tsp vanilla extract 1 lemon, lime, grapefruit or orange, zest …