Bonbon Mould Yield Planner: Shell, Cap, and Filling
Turn a sellable-piece target into full mould loads, component weights, filling yield, and a declared working buffer without hiding the estimates behind the plan.
A customer asks for 100 moulded bonbons, but a piece count does not tell you how many moulds to load or how much filling and retained chocolate to prepare. The answer changes with cavity count, finished-piece mass, shell thickness, cap weight, and the amount you keep as a working buffer.
This planner separates those decisions. It rounds the production target up to complete mould loads, allocates each piece between shell, cap, and filling, calculates staged masses after overage, and checks how many whole pieces the prepared filling can theoretically supply.
What to enter
- Enter how many finished bonbons you need and how many cavities your mould has.
- Weigh one filled bonbon on a kitchen scale and enter that average mass.
- Press Calculate — the planner returns how many moulds to fill and how much chocolate and filling to prepare.
Measure Bonbon Mould Capacity Before Planning
The strongest starting input is the average finished-piece mass from the exact mould and formula. That mass already reflects cavity geometry, the actual shell and cap, the filling, and the way your team scrapes and closes the mould. Do not copy a nominal cavity weight from a different couverture or assume two similar-looking moulds have the same capacity.
Record the empty mould weight
Use one clean, dry mould and the same scale for every stage. Tare a tray if needed, then record the mould before casting.
Weigh after the shell has crystallized
Cast, drain, scrape, and crystallize the shell using your normal method. The increase in mould weight divided by filled cavities is retained shell chocolate per piece.
Weigh after filling and after capping
Repeat the weighing after piping the filling and again after closing and scraping. The two weight differences give filling and cap mass per piece.
Average several sound pieces
Demould, reject visibly incomplete samples, and average multiple finished pieces. Divide each measured component by total piece mass to obtain the shell and cap percentages used by the planner.
A single piece can be misleading because air, uneven draining, or a heavy cap affects the result. Measure several neighbouring cavities and repeat after changing couverture, mould temperature, filling, or technique.
Use volume × density only as an early estimate
If no finished sample exists, measure cavity volume and enter a declared
chocolate density. The planner treats volume × density as an all-chocolate
reference mass, then applies your mass-allocation percentages. Filling
density, shell geometry, and trapped air are not inferred, so replace this
estimate with measured finished-piece and component weights after the first
test mould.
The density field is editable because couverture type, temperature, inclusions, air, and measurement method can shift it. A nominal cavity weight is useful for orientation, not proof of finished weight.
Calculate Shell, Cap, Filling, and Working Overage
The shell and cap fields are mass allocations, not universal thickness targets. If a measured finished piece is 12.5 g and the retained shell is 2.75 g, the shell allocation is 2.75 ÷ 12.5 × 100 = 22%. A 1 g cap is 8%, leaving 70%, or 8.75 g, for filling.
Keeping shell and cap separate matters. Casting establishes the side wall and base; closing adds the cap after the filling settles. A thin shell with a heavy cap can consume the planned chocolate while leaving filling yield unchanged.
| Planner layer | What it means | Rounding rule |
|---|---|---|
| Sellable target | Net component mass for the requested good pieces | Piece count remains exactly as entered |
| Complete mould loads | Every cavity in the required number of moulds is loaded | Moulds = ceiling(target ÷ cavities per mould) |
| Buffered plan | Complete-load component masses plus declared working overage | Masses stay unrounded internally; display is rounded only |
| Prepared filling yield | Whole pieces obtainable from the filling mass entered | Yield = floor(prepared filling ÷ filling per piece) |
The planner keeps piece rounding, mass overage, and filling yield as separate decisions
Working overage is applied after complete-mould rounding. This order prevents a common planning error: adding 10% to 100 pieces, obtaining 110, and then forgetting that five 24-cavity moulds still expose 120 cavities. The planner first establishes five full loads, calculates their net component masses, and only then multiplies each mass by 1 + overage percentage ÷ 100.
Overage is a staging buffer, not a predicted waste percentage. Filling left in a piping bag, chocolate on a scraper, and small weight variation may consume some of it, while drained casting chocolate can often be recovered and reused under the kitchen’s controls. The displayed shell and cap quantities represent retained chocolate in finished pieces; they are not the larger circulating mass needed to flood and drain a mould.
Read the Bonbon Production Plan
Consider the calculator’s default as a hypothetical planning example: 100 sellable pieces, 24 cavities per mould, 12.5 g measured finished mass, a 22% shell, an 8% cap, and 10% working overage. The remaining 70% is filling, and the prepared filling field contains 1,200 g.
Default example, calculated without hidden loss factors
The mould count is ceiling(100 ÷ 24) = 5. Five full moulds contain 120
cavities, so the complete-load plan includes 20 pieces beyond the sellable
target before any mass overage is applied.
Per piece, the calculation assigns 2.75 g shell, 1.00 g cap, and 8.75 g filling. The sellable target therefore needs 875 g filling net. Loading every cavity raises the net filling requirement to 1,050 g; the 10% working buffer raises the staged filling to 1,155 g.
The same sequence produces 363 g shell chocolate and 132 g cap chocolate, or 495 g retained chocolate to stage under the declared allocation. Total staged product mass is 1,650 g. These are calculated consequences of the inputs, not claims that every real cavity will retain exactly those weights.
The prepared-filling result uses a strict whole-piece floor. 1,200 ÷ 8.75 = 137.14…, so the planner reports 137 theoretical pieces and leaves 1.25 g below the next whole-piece requirement. It does not round to 138 because the available mass cannot fill that piece at the entered allocation.
| Result | Default value | Production meaning |
|---|---|---|
| Moulds required | 5 | Integer ceiling; the fifth mould is necessary |
| Loaded cavities | 120 | Full-load ingredient plan, including 20 spare cavities |
| Filling for sellable target | 875 g | Net mass for 100 pieces before overage |
| Filling to stage | 1,155 g | 120 cavities plus the declared 10% buffer |
| Prepared filling yield | 137 pieces | Theoretical floor before piping residue or defects |
How the visible default result moves from order quantity to staged material
Use the spare-cavity count consciously. Cast all cavities for samples or reserves, or load only the required cavities under a documented production policy. The full-load method keeps purchasing from silently depending on a partial final mould.
Verify Yield Before a Production Run
Run one representative mould before treating the plan as a production standard. Record good-piece count, average finished mass, component weights, recovered chocolate, and residues. Update inputs from observations instead of changing overage until totals happen to match.
The planner does not predict defects or shelf life
The arithmetic does not model shell geometry, incomplete drainage, pinholes, trapped air, cap leaks, breakage, piping residue, or operator variation. It also does not test filling water activity, emulsion stability, crystallization, or storage life. Validate the formula and process separately before sale.
Treat decimal output as traceable arithmetic, not scale resolution. The engine keeps full precision and the interface rounds mass for reading; round your final production sheet to the smallest increment your calibrated scale and process can repeat. Keep mould count and filling yield as whole numbers: moulds use a ceiling, while available-filling yield uses a floor.
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