Keep the screen awake with cook mode on the Good Food app.
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Method
step 1
Heat the oven to 180c
step 2
Beat together butter, sugar and zest.
step 3
One at a time add juice, egg yolks, flour and milk mix until you have a smooth batter
step 4
Whisk the egg whites until stiff, fold into batter, gently with a metal spoon.
step 5
Pour batter into 4 or 6 depending on size, greased dishes and bake in a baking tray filled with enough hot water to come half way up the outside of the dishes.
step 6
Bake for 25-30 minutes until lightly browned and set.