
- 400g caster sugar
- 1 tablespoon golden syrup
- 300ml water, divided
- 4 tablespoons unflavoured powdered agar-agar or gelatine
- 2 egg whites
- 1 teaspoon vanilla extract
- food colouring (optional)
- 125g icing sugar for dusting
- Line a 22cm square cake tin with cling film and dust with icing sugar
- Place 125ml water in a heatproof bowl and sprinkle the agar-agar, heat over a pan of boiling water until it has completely dissolved. Remove the pan from heat but keep the bowl on top to stop the it from solidifying
- In a medium saucepan, mix the caster sugar, golden syrup and 175ml of water over a medium heat. Heat to 125C (until a small drop of the mixture forms a soft ball when dropped into cold water)
- Turn off the heat and pour in the agar-agar while whisking
- Whisk eggs whites to stiff peaks, pour in the hot mixture slowly while whisking continuously. Beat until the mixture is very stiff.
- Stir in the vanilla and food colouring (if using) and spread evenly into the cake tin
- Leave to set (not in the fridge) overnight before cutting and rolling in icing sugar. Store in an airtight container for up to a week