Geode Cake

Name: Geode Cake
Prep time: 1 h 30 min
Cook time: 4 h
Total time: 4 h
Yield: 24 portions
Ingredients: 500 gram caster sugar; 2 tablespoon glucose syrup; 4 drop food colouring, gel, any colour; 2140 gram water; 2 teaspoon vinegar; butter, unsalted (from cows' milk); 400 gram caster sugar; 400 gram butter, unsalted (from cows' milk); ½ teaspoon salt; 1 tablespoon vanilla paste; 6 egg, European medium (53-63 g) (from chicken); 50 gram cocoa powder, unsweetened, natural; 1 tablespoon baking powder; 350 gram wheat flour; 450 gram mascarpone; 450 gram cream, whipping, 30-40% fat; 150 gram caster sugar; 25 gram cocoa powder, unsweetened; 500 gram mango, ripe; 2 tablespoon chocolate chip; 750 - 1000 gram sugar paste icing; icing sugar (may contain 3-5% anti-caking agent); 2 - 3 drop food colouring, gel, any colour