Formula and example
How it is calculated
circle diameter = cake diameter + 2 × height + 2 × margin; weight = circle area × measured g/cm²
Worked example
24 cm diameter, 8 cm height, 2 cm margin: a rolled circle of 44 cm diameter.
Things to check
- Measure the test sheet from the same paste, also checking the thickness. The example figures are not guaranteed yield data for a specific brand.
- Designed for a single-tier round cake with vertical sides. Creases, stretching, dusting, decoration, and reuse of leftovers may alter the actual requirement.
Frequently asked questions
Why is more material needed for the circle than remains on the cake?
When smoothing the sides of the rolled circle covering the cake, excess is generated, which you cut off. Therefore, the weight of the surface to be covered alone is insufficient for rolling.
Can it be used for other pastes?
Yes, if it is a covering that can be spread in the same way and you measure your own test sheet from it. Density and thickness are substituted by the sample; workability is not calculated.