Fruit Filling

Ingredients

• 4 tbsp citron
• 4 tbsp seeded raisins
• 0.5 cup blanched almonds
• 0.25 lb figs
• 3 egg whites
• 0.5 cup sugar

Method

Dice the citron, raisins, figs, and almonds finely — aim for pieces no larger than a lentil so they distribute evenly through the filling without creating gritty pockets. Measure as you go: 4 tablespoons citron, 4 tablespoons raisins, 125 grams almonds, 115 grams figs. The small particle size matters because this filling relies on the egg white foam to bind everything; larger chunks will sink and split the structure during baking.

Whip the egg whites to stiff peaks — they should form sharp, glossy points that don't collapse when you lift the whisk. This takes roughly 4–5 minutes with a hand whisk, less if using an electric mixer. The foam traps air and expands under heat, creating a light, mousse-like texture that carries the fruit and nuts rather than drowning them. Once you've reached stiff peaks, begin whisking in the 100 grams of caster sugar in two additions, whisking for 20 seconds between each. The sugar dissolves into the emulsification|foam structure, adding stability and preventing the egg white from collapsing as it sets. You've succeeded when the meringue is glossy, thick, and holds its shape without any grainy feel on your tongue.

Fold the dried fruit and nuts|almonds into the meringue in three additions, using a rubber spatula and turning the bowl as you fold rather than stirring. Folding preserves the air you've worked into the egg whites — aggressive mixing deflates them. The filling should look like a thick, fruit-studded cloud; if it feels loose or wet, your egg whites weren't whipped to full stiffness, and the filling will weep when baked.

Spread the filling between cake layers immediately, while the mixture is still at room temperature and the cake is still warm from the oven. The residual heat from the cake partially sets the egg white, firming the structure without fully cooking it — the filling should remain creamy and slightly soft at the centre, never dry or fully baked. If the cake has cooled, warm the layers briefly in a 160°C oven before assembly.