Milk Girl is a tender white cake of pale sponges and a milky cream. The typical failures are too much sweetness and a cream that splits. The first comes from the cream-to-sponge ratio, the second from components at different temperatures.
What it is made of
Top to bottom:
- Condensed-milk buttercream ×4 · 1.0 cm
The coating
- Vanilla sponge ×4 · 2.5 cm
Four sponges and four layers of cream. This is a modern cake with many variants; the cream may be whipped cream, cream cheese or a milk cream. In this builder it is butter with condensed milk: simple and dense, but sweet. The milk syrup many people soak the sponge with is not counted here; that is a matter of taste.
Order of work
Sponges (the day before): vanilla sponge from eggs, sugar and flour. Beat the room-temperature eggs with sugar to a thick, stable foam and fold in the flour with a spatula in a few strokes, or the foam collapses. Fill the tin no more than two thirds. Bake at about 170 to 180 °C until a skewer is dry. Do not open the oven before the structure sets. Cool 10 to 15 minutes in the tin, then on a rack. Do not wrap warm: condensation. A chilled sponge (4 to 10 hours) slices cleanly with a wire.
Cream: soft butter, condensed milk at room temperature. Beat the butter pale first, then pour the condensed milk in a thin stream into the already beaten butter. Stop the mixer as soon as the colour evens out: longer beating splits it. If it splits, warm the bowl until the fat melts, cool and beat again.
Assembly:
- Spread each sponge thinly, 3 to 5 mm: a thick layer makes the cake heavy and too sweet.
- Stack and press lightly.
- 20 to 30 minutes in the freezer, then a thin crumb coat, more chilling, and the final coat.
Resting: overnight in the cold. The cream moistens the sponge.
What can go wrong
- Split cream. Butter and condensed milk at different temperatures.
- Too sweet. Thick cream layers. Use thinner layers, or a sour berry on top.
- Sponge collapsed. Over-mixed, or the oven was opened.
- Uneven sides. No crumb coat.
The verdict
Thin layers of cream and the temperature while whipping decide it. Sweetness is controlled by layer thickness, not by sugar.