Halloween witches' hats

• 8 waffle cones, medium size
• 220 g dark chocolate, broken into pieces
• 8 tsp popping candy (approx. 30 g total)

Chocolate biscuit bases

• 130 g plain flour, plus extra for dusting
• 40 g cocoa powder
• 60 g caster sugar
• 1 tsp baking powder
• 130 g unsalted butter, cut into pieces (2 cm)
• ½ tsp vanilla bean paste
• 1 pinch salt

Chocolate custard

• 500 g full cream milk
• 60 g plain flour
• 40 g cocoa powder
• 100 g white sugar

Decorations and assembly

• 60 g dark chocolate, broken into pieces
• natural food colouring (e.g. purple and green)