crumb.
Neighborhood bakery · bake planning
●   Fictional bakery / real calculations
A little foresight. A better morning.

Tomorrow, made ready.

A considered bake sheet, from the rhythms of your neighborhood.

Monday, November 9, 2026

12°C · dry skies · regular trading

The bake sheet

10 daily favorites
Recommended bake—
Expected demand—
Production cost—
Preparing 18 months of sales history and fitting your bake forecast…
From the ovenForecast80% rangeBake
Forecast = expected units sold · Bake balances missed sales against day-old value.

Behind the forecast

Actual salesModel demandSold out · lower bound8-week holdout

How the model works

Each product has its own log-space least-squares fit: weekday, month, temperature, rain, snow, holiday, local event and promotion. Sold-out training days are excluded because observed sales are only a lower bound on demand. The final 56 days are never used to fit. The bake target is a lognormal newsvendor quantile: (price − cost) / (price − salvage). The range is the 10th–90th percentile of demand, based on training residuals.

A little accountability

Holdout MAPE ↓
ProductModelLast week
Comparing unseen days with the same weekday a week earlier.