Step 1

Preheat the oven to Gas Mark 4 or 180 C and butter a casserole dish or a deep oven tray. I used a 9 x 13 inch baking tin. Adjust shelf to middle of the oven.

Step 2

Combine the plain flour, salt and baking powder in a bowl and set aside.

Step 3

Beat the egg whites on high until soft peaks form. This take around 1 - 2 minutes. With the machine still running, add 50g/1/4 cup caster sugar and beat on high until egg whites are stiff (1 minute).

Step 4

Beat egg yolks with 150g or 3/4 cup Caster sugar on high speed, until yolks are a pale yellow (This takes 2 minutes).

Step 5

Stir in milk and vanilla.

Step 6

Gently add the flour mixture to the egg yolk mixture bit by bit. Use a metal spoon or spatula for this.

Step 7

Then gently fold in the egg white mixture. Use a metal spoon or spatula for this.

Step 8

Pour into your prepared dish and bake for 25 – 30 minutes.

Step 9

Once cooled for 15 minutes, pierce all over with a fork. In a large cup combine double cream, evaporated milk and condensed milk and drizzle over the top of the cake. Leave to soak for 30 minutes.

Step 10

In a large bowl combine double cream and sugar and whip on high until thick. This takes around 3 - 5 minutes. Keep a very close eye on it though . Reserve some and add to a freezer bag and place in the fridge. Or reserve some cream before whipping and set aside in a bowl in the fridge.

Step 11

Make a Caramel by heating the sugar and water till it is a deep golden colour. This will take some time.

Step 12

Remove from the heat and pour in cream a bit at a time stirring all the time. If you do this stage too quickly, the caramel will seize and part of it won't be usable.

Step 13

Pour the caramel bit by bit over the cream on the cake and spread evenly as you go.

Step 14

Snip a hole in the corner of the freezer bag.

Step 15

Pipe lines horizontally across the cake on top of the caramel. Use a cocktail stick to feather the cream dragging it down vertically through the lines of cream. See video in notes.

Step 16

At this stage you can place the cake in to the fridge for 2 - 3 hours or eat immediately.