Espresso Grind Size: How Fine Should You Actually Go for Home Machines?

By Saran Reddy, Founder - InstaCuppa | April 8, 2026 | 7 min read | Last updated: April 8, 2026

Getting the right espresso grind size is the single biggest factor in whether your shot tastes good or terrible. Too coarse and it runs sour. Too fine and the machine chokes. This guide shows you exactly where to set your grinder for every machine type.

How Fine Should Espresso Grind Be?

Espresso grind size needs to be fine - between 100 and 300 microns. That is roughly the texture of table salt, or slightly finer. If you rub it between your fingers, it should feel gritty but not powdery like flour. This narrow range is what makes espresso the hardest brew method to get right at home.

Why so fine? Espresso works by forcing hot water through a tightly packed bed of coffee at high pressure (usually 9 bars). The water is in contact with the coffee for only 25 to 30 seconds. In that short time, you need to extract enough flavour to fill a concentrated 30-40 ml shot. Fine grounds create enough resistance and surface area for this to happen.

If the grind is too coarse, water rushes through too fast and you get a weak, sour, watery shot. If the grind is too fine, water cannot pass through at all - the machine chokes, and whatever drips out tastes harsh and bitter. The sweet spot is somewhere in between, and finding it takes a bit of patience.

Pressurized vs Non-Pressurized Portafilter Grind Needs

Before you start dialling in your espresso grind size, you need to know which type of portafilter your espresso machine uses. This makes a big difference in how fine you should grind.

Pressurized portafilters (also called dual-wall baskets) have a small valve at the bottom that creates artificial crema. Most home espresso machines under Rs 25,000 in India use these - including the Agaro Imperial, Morphy Richards Impresso, Wonderchef Regenta, and DeLonghi Dedica. These are more forgiving with grind size. You can get a decent shot even if your grind is not perfectly dialled in, because the valve controls the flow rate for you.

Non-pressurized portafilters (also called single-wall baskets) have no valve. The grind size and tamping pressure alone control the flow rate. Machines like the Gaggia Classic Pro, Rancilio Silvia, and Breville Barista Express use these. With a non-pressurized basket, your grind size must be very precise - even half a setting on your grinder can be the difference between a great shot and a choked one.

If you are just starting out with espresso at home and your machine came with a pressurized basket, do not stress about getting the grind perfect. Start at a medium-fine setting and adjust from there. You will still get good results for lattes and cappuccinos.

How to Dial In Your Espresso Grind Size

Dialling in means finding the exact grind setting that produces a balanced espresso shot with your specific machine, beans, and basket. Here is the process I follow every time I open a new bag of beans.

1. Start at a middle espresso setting. On the InstaCuppa V2, start at setting 3. On the V3, start at setting 6.
2. Dose your basket. Use 14-16 grams for a double shot in a 51mm basket, or 18-20 grams in a 58mm basket. A kitchen scale helps here.
3. Tamp evenly. Press down firmly with a flat, level tamp. You do not need to push with all your strength - just firm and even.
4. Pull a shot and time it. A good double espresso should take 25 to 30 seconds to produce about 30-40 ml of liquid. Start timing from when you press the brew button.
5. Taste the shot. Bitter and harsh means the grind is too fine - go 1 setting coarser. Sour and watery means the grind is too coarse - go 1 setting finer.
6. Change only 1 setting at a time. This is the most important rule. If you change grind size AND dose at the same time, you will not know which change made the difference.
7. Repeat until balanced. A well-extracted espresso tastes sweet, slightly bitter, with no sourness. It usually takes 3 to 5 shots to find the right setting with new beans.

I know wasting 3 to 5 shots of coffee feels wasteful. But once you find the right setting, you can use it for the entire bag of beans. Just write down the setting number so you remember it next time you buy the same beans.

What Happens When Grind Is Too Fine or Too Coarse

Understanding what goes wrong helps you fix it faster. Here is a simple breakdown of espresso grind size problems and their symptoms.

A choked shot is the most frustrating experience for home espresso beginners. Your machine makes loud noises, barely anything drips out, and what does come out is dark and undrinkable. If this happens, do not panic. Just go 1 setting coarser and try again. On the V2, one setting change makes a noticeable difference because there are 25 total settings. On the V3 with 60 settings, you may need to move 2-3 settings to see a change in the cup.

InstaCuppa V2 and V3 Espresso Settings

Here are the specific espresso grind size settings I recommend for both InstaCuppa grinder models. These are starting points - you will still need to dial in based on your beans and machine.

The V3 Espresso Edition has a clear advantage here. With 60 settings instead of 25, each click is a smaller change. This means you can make finer adjustments when dialling in espresso. If you pull a shot on V2 setting 2 and it is too fine, but setting 3 is too coarse, you are stuck. On the V3, you have settings 4, 5, 6, 7 between those same two points, so you can find the exact sweet spot.

That said, the V2 Classic Edition at Rs 6,499 works perfectly fine for espresso with pressurized portafilters, which is what most Indian home espresso machines use. The V3 at Rs 7,499 is worth the extra Rs 1,000 if you plan to use a non-pressurized basket or want more control over your shots.