Is cask ale worth it for your pub?

Last updated: 29 June 2026

Most publicans stock cask ale because the brewery tells them to, not because they’ve actually checked whether it makes money. I was the same for years — until I looked at what cask was actually returning against the space, temperature control, and cellar labour it demanded. That single conversation with my accountant changed how I stock.

The uncomfortable truth is this: cask ale can be profitable, but only if you’re measuring it properly — and most pubs aren’t. You might be losing margin to over-temperature, poor turnover, spoilage, and wastage without realising it’s even happening. This article walks you through the real questions to ask, the numbers that actually matter, and how to decide whether cask belongs in your cellar.

The cask ale question pubs should be asking

Here’s the question I wish someone had asked me years ago: Does cask ale generate more profit per pint sold than your keg equivalent — after all costs are accounted for?

Not volume. Not because it’s “good for the pub community”. Not because the brewery rep says so. Profit per pint, measured properly.

Most publicans never ask this because they assume all beer is beer. It’s not. A hand-pulled real ale at £4.20 a pint looks better on a till than a keg bitter at £4.00, but if the keg line turns over four times a week and the cask turns once, and if the cask spoils 15% faster, the keg is making you more money.

That’s the conversation you need to have with your accountant and your supplier. Not with the CAMRA rep, not with the brewery brand manager. With the numbers.

Margins, turnover, and the maths that matters

Cask ale typically carries a 2–4% better margin than keg draught of the same style. That sounds good until you factor in three things: wastage, turnover time, and cellar space cost.

Wastage on cask is real and significant. Every cask has a working life of about 4–6 weeks once tapped — depending on temperature, line cleanliness, and how fast you’re pulling it. A cask that sits in your cellar for three weeks turning over four pints a day will spend 70–80% of its life deteriorating. A cask that’s gone in seven days at a busy venue looks completely different on the numbers.

Temperature is the enemy. The optimal serving temperature for most cask ales is 52–54°F. Every degree above that shortens shelf life. Many pubs run their cellars at 55–58°F because it’s cheaper to condition, or they don’t monitor it at all. That choice costs you real money.

Then there’s turnover. Working capital trapped in slow-moving cask stock is working capital you can’t use elsewhere. If you’ve got £400 tied up in a cask that’s going to take four weeks to sell, versus a keg that turns in ten days, that’s money that could have cycled four times. Cash flow matters more in a pub than most operators realise.

The other question is cellar footprint. Cask takes up more space than keg. A cask occupies about four times the square footage of a keg pin or keykegs. If your cellar is tight — and most pubs’ are — that space has an opportunity cost. What else could go in there?

The hidden costs nobody talks about

You already know cask costs money to buy. What you might not be measuring is what happens to it once it’s in your cellar.

Temperature stability and cooling cost. Cask requires tighter climate control than keg. If you’ve got to run a standalone cellar cooler for cask, that’s an electricity bill. If you’re fighting to keep the whole cellar cold because of cask, you’re cooling keg and bottles harder than necessary. Small cost per week. Big cost per year.

Line cleaning and maintenance. A cask line with a tight swan neck and a hand pull needs cleaning as often as keg — weekly at minimum. The swan neck especially collects residue and can develop sour pockets. That’s 15 minutes a week you’re paying someone to clean. Scale that across a year, that’s real labour cost.

Spoilage and wastage. A 1% loss on wet sales across the whole pub quietly costs a typical pub £3,000–£5,000 a year. Cask spoils faster than keg if temperature drifts or turnover is slow. If cask makes up 30% of your draught sales and spoils at twice the rate of keg, you’re looking at a significant chunk of that loss.

Stock tied up and forgotten. How many pubs have a partial cask sitting in the back that nobody’s keeping an eye on? Three weeks in, it’s oxidising, and nobody realises until the next stocktake. That loss is invisible until you start measuring it.

When cask ale actually works in a pub

There are pub types where cask absolutely makes sense. There are others where it’s a drain.

Cask works when:

• You’ve got a customer base that actively orders it — meaning your cask volume is genuinely competing with keg, not sitting as a novelty line.
• Your cellar is temperature-stable and well-managed, and you’re actually monitoring it weekly.
• You’ve got the space to hold 2–3 casks without crowding out everything else.
• Your turnover is fast enough that a cask is gone in 10–14 days, not 4 weeks.
• The margin difference against your keg equivalent is worth the labour and spoilage risk — typically that means 3% margin or better.

Cask doesn’t work when:

• You’re stocking it because the brewery told you to, or because you think it looks good on the bar.
• You’ve got a student clientele or a sports-bar crowd that mostly drinks smooth or fizzy lager.
• Your cellar temperature fluctuates or you’re not checking it regularly.
• You’ve only got room for one cask, and it’s turning over slowly because there’s limited demand.
• Your margins are tight and a 2% uplift doesn’t justify the extra complexity.

Be honest about which category you’re in. A country pub with a loyal real ale following? Cask probably makes sense. A city-centre bar with high student turnover? Probably not.

How to measure cask performance properly

The way most pubs measure cask is: “How many pints sold?” That’s not a metric. That’s a vanity number.

The number that actually matters is wet gross profit by line, not a single headline stock figure. That means knowing exactly what a cask cost you, what percentage of it you sold versus what you wasted, and what the net profit was after all labour, cooling, and wastage is factored in.

Here’s what you need to track:

• Date in, date out, pints sold: So you can calculate sellthrough rate and spot slow lines.
• Temperature at tapping and weekly: Because temperature directly affects shelf life and margin.
• Estimated wastage: That partial cask that gets disposed of at the end — measure it or estimate it against a full cask weight.
• Tapping loss (the first pour): About 2–3 pints. Account for it.
• Gross profit per pint sold: Margin minus waste, divided by pints sold. That’s the real number.

A StockTap pub stock app makes this easier because you can log each cask once and then track temperature, waste, and sellthrough weekly without having to rebuild a spreadsheet every time. But even a basic tracking sheet is better than guessing.

The single most important data point is this: What percentage of each cask goes out the door as pints sold, and what percentage goes down the drain as waste, oxidation, or unsellable dregs? If it’s below 85%, cask probably isn’t worth it for that line. If it’s consistently above 90%, you’ve got a winner.

Common mistakes that tank cask profitability

I’ve made most of these. Here’s what I see in other pubs too.

Mistake 1: Stocking cask you don’t have customer demand for. You’ve got a beautiful hand-pull on the bar and one cask on. Three pints a day. It takes four weeks to sell. That’s not a product line, that’s a museum piece. If demand isn’t there in the first two weeks, pull it.

Mistake 2: Not monitoring cellar temperature weekly. You think it’s fine because you set the cooler once. Then summer hits, or you have a cold snap, or the cooler sensor drifts. Most pubs that actually measure and log temperature weekly discover their cellar has been running 2–3°F warmer than they thought. That costs margin every single day.

Mistake 3: Mixing different cask styles and forgetting which is which. I did this for years — three similar-looking casks in the back, hand-written labels, and the bar staff are pulling from the wrong swan neck. Spoilage goes up, margins disappear, and you can’t figure out why. Label everything clearly. Date every cask the day it goes in.

Mistake 4: Not charging enough to cover the complexity. If your cask ales are priced the same as your keg alternatives, you’re already losing. Cask carries a premium for a reason — it requires more management. Price it 20–30p higher per pint than the equivalent keg, or don’t stock it.

Mistake 5: Relying on the brewery stocktaker to catch problems. The brewery comes in once a month. By then, you’ve already lost a month of margin on a slow or dying cask. You need to be checking your own stock weekly. That’s not their job. It’s yours.

At my own pub I was running stock on a tangle of spreadsheets and still losing track of partial kegs and spirit measures. I built a simple count routine around a dipstick and a set of scales, and the weekly variance went from guesswork to a number I could trust within a fortnight. That same discipline is what caught a cask line that had been quietly losing money for six weeks.

For more information, visit SmartPubTools.