Hawaii mousse
I first had this cake when my cousin bought it for my 32nd birthday. It was from a bakery chain called Nguyễn Sơn. The flavour combination of coconut and caramel left such an impression on me that I had to recreate it. Finally got the recipe right after a few tries.
Recipe makes one 9-inch cake + 1 small (6-inch) cake or some test ramekins.
Gateau - basic sponge sheet 8-inch
2 egg yolks + 25l milk + 20g melted butter + 1/4 tsp vanilla 2 egg whites + 40g sugar - whip to hard peak 44g plain flour + 11g corn starch (making 55g cake flour) 1/4 tsp baking flour
Whip egg whites and sugar to hard peak.
Fold dry ingredients into whipped egg white then fold yolk mixture. Pour into 8-inch mould and bake 180C for 15 minutes - if double the recipe to make more sheet, may need to increase baking time, bake until top slightly golden and fork/toothpick/.. comes out clean.
Let cool before cutting into 1.5cm tall sheet.
Line 9-inch cake ring and place cake sheet at the bottom in the middle.
Coconut mousse
3 egg yolks 150ml milk 60g sugar 120g roasted desiccated coconut 250ml whipping cream 3.5 gelatine leaves Original recipe: 400ml cream + 200ml milk + 12g gelatine powder (5 sheets)
Roast desiccated coconut at 140C, 5-7 minutes and mix often until evenly golden.
Heat milk until just boiled, off heat, add slowly into egg + sugar mixture until well combined. Back into the pan and low heat, mix until finger wipe on spatula leaves a stripe.
Add bloomed gelatine into (2) and mix to melt completely, let cool to 45-50C.
Whip cream until soft peaks (under better than overwhip).
Fold (3) gelatine mixture and (1) coconut into (4) whipped cream.
Pour into the mould and let set for 2 hours.
Caramel mousse
100g sugar + 40g butter + 30ml boiling water 300ml whipping cream 3 gelatine leaves Original recipe: 400ml cream + 10g gelatine powder (4.3 leaves)
Add 2 tbsp of water then 100g sugar (in that order) into a saucepan on low heat. Let sugar melt completely without stirring before increasing heat to medium. Watch carefully as the sugar caramelise - turn off heat when sugar is golden brown as it will continue to caramelise and darken. Carefully add butter then boiling water and mix thoroughly.
*can add a bit of glucose/corn syrup or a bit of lemon juice to prevent crystallisation of sugar.
Wait 2 minutes then add bloomed gelatine into (1) and melt completely. Let cool slightly to 50C.
Whip cream until soft peaks.
Fold (2) into (3) then pour into the mould and let set for 2 hours.
Caramel jelly
75g sugar + 50ml boiling water More water to make up 150ml in total 3 gelatine leaves Alternatively: 50g sugar -> 120ml water + 2 leaves gelatine
Caramelise the sugar as above. Carefully add water at the end. Add more water to make 150ml in total.
Add bloomed gelatine and melt completely.
Let cool to 50C and pour a thin layer on top of cake. Turn cake around to coat evenly.
Coral tuile decoration
80g oil + 32g warm water + 10g plain flour + 1 tsp icing sugar
Mix above thoroughly until no lump.
Heat a non-stick pan on high until ++ hot; pour mixture in enough to coat the pan thinly (it will splash everywhere).
When the tuile starts to turn golden, lower the heat and may need to move the pan around to brown evenly.
Use a spatula to transfer the sheet onto kitchen towel (to drain oil).
Once tuile hardens, break to desired shape.















