For any distillery that matures spirit, the warehouse is where your money sits — often for years. Knowing exactly what is in every cask, where it is, and how it is developing is the difference between a confident business and a guessing game.
This guide covers how to manage casks properly, from fill to bottling.
Give every cask a digital identity
The foundation of cask management is a record for each barrel that travels with it for life. At a minimum, capture:
- A unique cask number
- Wood type and char/toast level
- Cask type and size (barrel, hogshead, quarter cask, puncheon…)
- Previous contents (bourbon, sherry, wine…)
- Fill number — first fill, second fill, and so on
- Cooperage or supplier
This profile is what lets you answer questions like "show me every first-fill bourbon cask filled in 2024" instantly.
Track the fill
When you fill a cask, record the spirit type, fill date, volume and ABV. From volume and strength you get the litres of pure alcohol (LAL) going in — the figure that matters for both inventory value and excise. See calculating LAL and excise.
Map your rickhouse
Knowing a cask exists is not enough — you need to find it. Record each cask's warehouse, row, bay and level. A good location system lets you:
- Pull the right cask for bottling without hunting
- Understand microclimates (higher racks are warmer and evaporate faster)
- Plan rotation strategies for consistent maturation
More in rickhouse and warehouse layout best practices.
Measure the angel's share
Spirit evaporates as it matures — the famous "angel's share". Tracking it matters for two reasons: it tells you how much sellable spirit you actually have, and it affects your records.
Log periodic measurements (volume and ABV) over a cask's life. The loss against the original fill is your angel's share percentage. Our guide to calculating angel's share walks through the maths, and we cover the tax question in do you pay excise on the angel's share?.
Run regular cask audits
A periodic stocktake reconciles what your records say against what is physically in the warehouse. A clean audit:
- Confirms total LAL maturing (a key asset figure)
- Catches discrepancies early
- Keeps you audit-ready for the ATO
See how to run a cask inventory audit.
Plan for emptying and reuse
Casks have a working life. Track:
- Target empty dates so you can plan bottling and cash flow
- Fill number so you know a cask's maturation power (a fourth-fill cask gives far less than a first fill)
- Whether an empty cask is retired or going back into service
Why spreadsheets struggle here
Cask management is where spreadsheets show their age. Hundreds or thousands of casks, each with a fill history, location, measurements and target dates, quickly become unmanageable in a grid. A missed update means a cask "lost" in your own warehouse.
CaskPilot gives every cask a living profile, a visual rickhouse map, automatic angel's share tracking and maturation alerts — so the warehouse is always under control.
The bottom line
Treat every cask as a tracked asset with its own identity, location and history. Measure regularly, audit periodically, and plan emptying ahead of time. Get this right and maturation becomes a strength, not a risk.
See cask management in action — Book a demo.