Rhubarb tart with blood orange sabayon
By Matt Tebbutt From Saturday Kitchen Ingredients For the rhubarb tart 225g/8oz butter 280g/10oz caster sugar, plus extra for decorating 60g/2¼oz ground almonds, plus extra for decorating 150g/5½oz ground pistachios, plus extra for decorating 4 free-range eggs, beaten 40g/1½oz plain flour …