Ornamental Frosting I

Ingredients

• 2 cups sugar
• 1 cup water
• 3 egg whites
• 0.25 tsp tartaric acid

Method

Boil the sugar and water together without stirring — agitation at this stage only promotes crystallisation. The syrup is ready when it reaches the hard-thread stage: 149°C on a sugar thermometer, or when a drop cooled in ice water forms a brittle thread that snaps between your fingers. This temperature is critical; undercooked syrup won't set the egg-white properly, and overcooked syrup will scramble it.

Whisk the egg whites in a clean, grease-free bowl until they hold stiff peaks — the proteins have unraveled and trapped air, creating a stable foam. Pour the hot syrup into the whites in a thin, steady stream while whisking continuously. The heat cooks the raw eggs to food-safe temperature whilst the mechanical action of whisking incorporates the syrup into the foam through emulsification. This gradual addition prevents the whites from seizing into clumps. Once all syrup is incorporated, add the tartaric acid — it stabilises the foam by lowering pH and preventing the egg proteins from bonding too tightly — and continue beating for 2–3 minutes until the mixture cools and thickens.

You now have two frosting consistencies to work with. Thin the first batch with a teaspoon of water at a time until it has the texture of thick cream — spreadable but not runny. Apply this as a crumb coat over the cake, working quickly with a palette knife or offset spatula before it sets. This layer must harden completely; refrigerate for 30 minutes if needed.

Return to the remaining frosting and beat it again until it's stiff and glossy, holding peaks that don't collapse when you lift the whisk. It should be firm enough to hold its shape when forced through a piping tube but not so dry that it cracks. Apply the second coat thickly — this is your canvas for decoration. Use a variety of piping tubes to create borders, rosettes, and flourishes as desired. If the frosting becomes too stiff mid-decoration, warm the bowl briefly over steam to loosen it, then rebeat.