Fondant is the foundation of pastry making: a smooth, white mass made from crystallised sugar syrup, used to coat cakes, eclairs and pastries. It can be made at home with a sugar thermometer and patience. The key is the exact temperature and thorough kneading after cooling.
Bring the sugar, water and glucose to the boil in a heavy-bottomed pan. Cover with a lid for 2 minutes so that the steam washes down any sugar crystals stuck to the side of the pan. Then remove the lid.
Boil over high heat without stirring to 115-118 °C (soft ball stage). Wash down the sides of the pan with a wet brush if sugar crystals form.
Pour the hot syrup onto a damp marble slab or a tray rinsed with cold water and leave to cool for 5 minutes to 40-50 °C, until a skin begins to wrinkle on top.
Work the syrup with a damp spatula (or wooden spoon): fold it over repeatedly and press firmly until it turns into a white, compact, creamy mass.
When the mass is firm, knead by hand until smooth, as if kneading dough. If it sticks, add a little icing sugar.
Keep in an airtight container covered with a damp cloth in the fridge for weeks. To use, warm it with a little water over steam to 37 °C, flavour and colour it and pour over cakes and eclairs.
Based on: Malatinszky Fanny szakácskönyve (a classic Hungarian cookbook), modernised. Calories and protein are estimated.
Tips
Use a sugar thermometer to measure the temperature.
Wash down the sides of the pan with a wet brush.
Knead thoroughly until white and smooth.
Store airtight.
Frequently asked questions
How long does it keep?
In an airtight container in the fridge for several weeks.