Coffee Roaster Inventory Management: From Green Bean to Retail Shelf

Coffee roasters manage three distinct inventories: green beans (raw), roasted coffee (finished), and packaging/retail (supporting). Each stage has unique loss vectors. Moisture loss from green beans, roast yield variance, and packaging misalignment are the three most expensive and most preventable.

Stage 1: Green Bean Inventory

Weigh every bag on delivery. Record origin, variety, processing method, and moisture content if available. Weigh the same bags monthly. Green beans absorb humidity — a 25 kg bag can gain 1.5 to 2% in humid storage. That is 375 to 500g of water weight you paid for as coffee.

Monthly Moisture Check Formula:
Moisture Gain % = (Current Weight - Delivery Weight) / Delivery Weight x 100
Target: under 1%. Over 3% means your storage conditions need improvement. Breathable grain bags at 60°F and 60% relative humidity.

Stage 2: Roast Yield Tracking

Roast Yield % = (Roasted Output / Green Input) x 100

Benchmarks by roast level: Light roast 85-88%, Medium roast 82-85%, Dark roast 78-82%, Espresso blend 80-83%. Deviations over 2% from your target indicate roaster calibration issues or green bean moisture problems.

Stage 3: Packaging Alignment

You roast 20 kg of Ethiopian medium. Your retail bags hold 340g. You need 58.8 bags. Round up: 59 bags. If you only have 55 bags in stock, 1.4 kg of roasted coffee sits exposed to oxygen while you wait for a bag reorder. Oxygen staling begins within 24 hours of roasting without nitrogen flush.

Calculate packaging requirements at the start of every roast schedule. Order bags before you need them.

When Manual Tracking Breaks Down

TrackItWeekly tracks inventory across three item categories with separate PAR levels per category. Plans start at $19 per month with a 14-day free trial.

FAQ

Q: How do I track blends when origins change seasonally?
A: Create a blend SKU with component ratios. When you substitute origins, create a new batch record with the substituted components. Track batch-by-batch, not blend-by-blend.

Q: Should I count green beans by bag or by weight?
A: Always by weight. Bags gain moisture. Weight is the only accurate measure of what you actually have to roast.