Frequently asked questions

The grinder, and it isn't close. Espresso forces water through a compressed puck of coffee at pressure, so if your particle size is inconsistent the water channels through the path of least resistance and the shot is ruined — and no machine on earth can fix that. A great grinder makes a mediocre machine drinkable; a great machine cannot rescue a bad grind. If your total budget is tight, spend disproportionately on the grinder.

It depends on which kind of beginner you are, and this is the fork most buying guides refuse to acknowledge. If you want espresso tonight with no learning curve, the Breville Bambino Plus textures milk for you automatically and is ready in three seconds. If 'beginner' means 'my first real machine' and you want to learn, the Gaggia Classic Pro gives you a 58mm commercial portafilter and a brass boiler — but no PID and a genuine learning curve.

Not immediately, no. A machine like the Breville Barista Express includes a grinder and it works. But a built-in grinder is a compromise — the Barista Express's has 16 grind settings, which is coarse resolution for espresso, where the difference between a good shot and a bad one can sit between two clicks. If your shots are inconsistent and you've fixed everything else, the grinder is usually the ceiling you're hitting.

Sour means under-extracted — you haven't pulled enough out of the coffee. The most common cause by a wide margin is that your grind is too coarse, so water rushes through without extracting properly. Grind finer, one step at a time. Other causes: your shot ran too fast or you pulled too little liquid, your water is too cool, or your beans are very lightly roasted or under-rested.

Bitter is the opposite problem: over-extraction. You've pulled too much out of the coffee. Usually the grind is too fine, or the shot ran too long, or the water is too hot. It can also be a very dark roast, which starts out bitter regardless of what you do. Change one variable at a time, starting with grind.

A PID is a controller that holds the boiler at a target temperature, instead of a thermostat that lets the temperature swing around a set point. It matters because brew temperature drives extraction — too cool tastes sour, too hot tastes harsh. You don't strictly need one, but without it you manage temperature yourself by timing your shot. Interestingly, Breville puts PID in machines cheaper than the Gaggia Classic Pro, which has none.

A pressurized (dual-wall) basket has a restrictor that creates back-pressure artificially, so it produces crema almost regardless of your grind. It flatters a bad grinder — which is why entry-level machines ship with one — but it also hides all your feedback. A non-pressurized (traditional) basket gives you nothing for free: the coffee puck itself must create the resistance, which demands a genuinely consistent grind. It's less forgiving and much better.

It depends on your machine, and getting it wrong wastes money. Breville home machines are 54mm. Gaggia and Rancilio use 58mm, the commercial standard, which means baskets, tampers and bottomless portafilters are cheap and everywhere because they're made in volume for cafés. De'Longhi does not publish a portafilter diameter for its machines at all — so before you buy an accessory for one, measure it or ask De'Longhi.

It depends on the generation, and this catches people out constantly. The current Classic E24 is specified by Gaggia as a lead-free brass boiler with a brass group. Gaggia's own service manual for the earlier Classic 2019 and Classic Evo Pro specifies an aluminium boiler. Both claims circulate online as 'the Gaggia Classic Pro spec'. If brass is why you're buying, confirm you're getting an E24.

No — and this is the single most counter-intuitive thing in Breville's range. The Barista Pro has a manual steam wand. The cheaper Bambino Plus is the one with the automatic, hands-free milk system. Breville's own spec sheets say 'manual milk texturing' for both the Barista Express and Barista Pro, and 'hands-free' only for the Bambino Plus. If automatic milk is what you want, do not buy up.

More than the machine, which is the part people miss. A real setup is a machine, a grinder (not optional), a scale, a tamper that fits your basket, and fresh beans as a recurring cost. A machine advertised at one price that needs a grinder to work is not a setup at that price. We don't quote prices on this site because they rot — we show you live ones instead.

Fine — much finer than drip, and finer than a moka pot. But 'espresso grind' isn't one setting: the correct grind is whatever makes your shot run in roughly the right time for your dose and yield, and it changes with the beans, their age, and the humidity. A common starting point for a double is around 18g in and about 36g out in roughly 25–30 seconds, then adjust the grind until you land near that.

Some are, and it's a legitimate route — especially for a small machine like the Bambino where counter space is the constraint. But the specific model matters enormously. The 1Zpresso J-Ultra adjusts in 8-micron steps and is explicitly espresso-optimised. The Timemore Chestnut C3 comes in two versions and only the ESP one has a dial fine enough for espresso — its dial is roughly four times finer than the standard C3's. Buy the wrong version and you can't dial in a shot.

Yes, and it's the most under-rated purchase in espresso. Espresso is a ratio — coffee in, liquid out — and without a scale you're guessing at both ends. A scale with 0.1g resolution and a built-in timer turns espresso from guesswork into something repeatable. It costs a fraction of any machine on this site and it will improve your coffee more than most upgrades.

No, and this is the internet's favourite coffee myth. A moka pot brews at roughly one to two bar of pressure; espresso is conventionally around nine. What a moka pot makes is strong, concentrated coffee — genuinely good, genuinely different, and not espresso. It's an excellent thing to own. It just isn't the thing it's often sold as.

Fresh enough to have a roast date on the bag, which immediately rules out most supermarket coffee. Beans need a few days to degas after roasting, and are generally at their best from roughly one to four weeks off roast. Fresh beans are the cheapest upgrade available to you and the one people skip while spending hundreds on hardware.

No, and we're not going to pretend otherwise. We have no lab and, as of launch, we have not used a single one of these machines. Every product page says so in a badge you can't miss, and we publish a full ownership table listing exactly what we have and haven't used. What we do instead: source every spec from the manufacturer's own documentation, track live prices with a visible timestamp, and show our reasoning.

Amazon affiliate commission. If you buy through a link here, we earn a percentage and it costs you nothing extra. Every earning link on this site is labelled 'paid link' right next to the link itself — not just in the footer — because the FTC says a disclosure has to be adjacent to the link to count. Commission does not affect our recommendations, and we link to products we earn nothing from.

Because typed-in prices rot. Go and read almost any espresso buying guide and you'll find numbers that were true years ago and have been quietly wrong ever since. Every price here comes from Amazon's API with the date we checked it — and if that data is more than 48 hours old, we stop showing a number at all rather than show you a stale one.

Tell us and we'll fix it within 48 hours, and we'll note the correction on the page with a date rather than quietly editing it. We're going to get things wrong — everyone does — and a site that silently rewrites its own history isn't one you should trust about anything else either.