Salzburger Nockerl: Süß wie die Liebe und zart wie ein Kuss

A morning soufflé with hints of lemon and orange.

Fred Raymond, in 1938, composed an operetta called Season in Salzburg (Salzburger Nockerl) which he described as being "sweet as love and tender as a kiss".  This sweet dumpling soufflé, with its light citrus flavor and airy texture, is a tribute to Spring... and, of course, to love.

• 1/4 vanilla pod, split lengthways

• 90 grams fine sugar

• 5 large eggs, room temperature, separated

• finely grated zest of 1 lemon

• finely grated zest of 1 orange

• 1 heaped tbsp plain flour

• 2 tbsp butter

• 1/4 cup heavy whipping cream

• 2 tbsp confectioner's sugar (to dust)