Italian Meringue Buttercream Vanilla Raspberry with Goldleaf｜Anneke Cooking

Italian meringue Buttercream Vanilla Raspberry with Goldleaf｜Anneke Cooking
Cake Ingredients:
all-purpose flour 220g
granulated sugar 190g
baking soda 1g
baking powder 4g,
salt 2g
unsalted butter 175g
3 egg whites
vanilla extract 13ml
sour cream 125ml
milk 120ml
Italian Meringue Buttercream Ingredients:
4 egg whites
1/4 tsp cream of tartar
sugar 200+70g
1/4 tsp salt
unsalted butter 450g
Vanilla extract 10ml
water 80ml
Raspberry jam
350g raspberries
50g sugar
30g water
17g lemon