― 2 egg whitespinch cream of tartar1/2 cup caster sugar1 tablespoon cocoa powder200 g mixed berries2 teaspoons icing sugar, for dusting ∙ Preheat oven to 150°C. Line a baking tray with non-stick baking paper. Draw four 7cm circles on baking paper.Using an electric mixer, beat eggwhites and cream of tartar until soft peaks form. Add sugar, 1 tablespoon at a time, beating well after each addition. Beat until meringue is thick and glossy. Add cocoa. Beat until just combined. ∙ Spoon [...].