01 -
Preheat oven to 180°C. Grease either an 8-inch (20 cm) square glass baking dish or six 240 ml ramekins with butter.
02 -
In a mixing bowl, whisk together the granulated sugar and flour. Set aside.
03 -
In a separate medium bowl, beat egg whites on high speed for 4–5 minutes until firm peaks form. Do not overwhip.
04 -
In another medium bowl, beat egg yolks on medium-high speed until pale and thick. Add melted butter, lemon zest, and lemon juice. Continue beating for 1 minute. Gradually alternate adding the flour-sugar mixture and milk to the yolk mixture in 5 portions of flour and 4 of milk, beating after each addition.
05 -
Gently fold the beaten egg whites into the batter with a spatula, maintaining as much volume as possible.
06 -
Transfer batter into prepared baking dish or ramekins. Place dish or ramekins into a large shallow roasting pan. Pour hot water into the roasting pan until it reaches halfway up the sides of the baking dish or ramekins.
07 -
Bake in the centre of the oven. If using ramekins, bake for 35–40 minutes until lightly browned on top. If using a larger dish, bake for 50–55 minutes. The top should be cake-like, the bottom a soft pudding. Cool for 5 minutes before serving.
08 -
Serve warm or chilled. Dust with powdered sugar and garnish with fresh berries if desired.