Tutorial
Breville Barista Pro Grind Settings
Complete guide to all Breville Barista Pro grind settings with dialing-in instructions and extraction timing.
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Grind Settings Guide
Breville Barista Pro Grind Settings: 30-Setting Guide
The BES878 Barista Pro has 30 external grind settings; Breville suggests starting at 15. Lower numbers grind finer and generally slow the shot; higher numbers grind coarser and generally speed it.
⏱️ 15 MIN READ • 📅 UPDATED FEBRUARY 2026 • 📖 30 GRIND SETTINGS
⚠️ Important: Check Your Barista Pro Grind Range
The BES878 Barista Pro has 30 grind settings. Start with Breville’s suggested 15, then dial in your beans. A setting is not a particle-size measurement or a promise of a specific shot time.
For comparison, the Breville Barista Express may use a different dial range and calibration. Always start from your machine's current setting, change one variable at a time, and retest with the same dose and beans. The Barista Express Impress uses a different 25-setting dial with assisted dosing, so follow the separate Breville Barista Express Impress grind settings guide rather than the numbers here.
Breville Barista Pro Grind Settings Quick Chart
| Bean type | Starting grind number | Dose | Yield target | Shot time target | Adjustment |
|---|---|---|---|---|---|
| First setup, BES878 Barista Pro | 15: manufacturer starting suggestion | Match the basket | Choose and weigh a recipe target | Record, rather than force a fixed time | Brew and evaluate before changing |
| Fast flow, thin or sour result | Try a lower number | Keep stable | Keep stable | Compare with the previous shot | Make one small external adjustment |
| Dripping or choking | Try a higher number | Check for overfilling first | Keep the recipe target | Stop a stalled attempt | Check basket and preparation as well |
| New coffee or roast | Use the previous recipe as a baseline | Weigh again | Record your chosen target | Record alongside taste | Do not assign a number from roast color alone |
Key Rule: Lower numbers are finer and slow the shot. Higher numbers are coarser and speed the shot.
When the External Grind Number Is Not Enough
If you are always at setting 1-3 and the shot still runs fast, the internal burr may need to be adjusted finer. If you are always at the coarsest available setting and shots still choke, the internal burr may be too fine for your beans.
Use the matching manual for the internal burr procedure, record the original position, and compare with the same dose, beans, and yield target.
Troubleshooting by Shot Result
| Shot result | What it means | Grind change |
|---|---|---|
| Fast flow with a thin, sour result | Grind may be too coarse; dose and preparation can also contribute | Try a small move finer while holding dose and yield steady |
| Drips or chokes | Grind may be too fine or basket overfilled | Check dose; try a small move coarser |
| Uneven flow or spurting | Puck preparation may be uneven | Keep grind initially; distribute and tamp consistently |
| Normal flow but unpleasant taste | Recipe and bean flavor still matter | Compare dose and yield before changing several controls |
Why roast charts and other machines’ numbers do not transfer
There is no reliable one-to-one conversion from a Barista Express setting to a Barista Pro setting. Even on the same model, a different internal burr position or bag of beans can change the useful external number. A dark roast does not automatically require a particular low number, and setting 15 is not reserved for French press.
For a new coffee, keep your basket and recipe consistent, brew at the existing working position, then adjust from flow and taste. If you are starting from scratch, use the manufacturer’s suggested 15. Record the number that works rather than treating a chart as a calibration certificate.
How to Dial In Using Breville Barista Pro Grind Setting Numbers
1
Start with the BES878 guidance
The Barista Pro has 30 external grind settings. Breville suggests 15 as a starting point. It is not a guaranteed final espresso setting.
💡 Tip: Confirm the model code and use the matching manual.
2
Choose and measure a recipe
Use the appropriate basket, weigh the ground coffee, and choose a beverage yield. For example, a 1:2 ratio means twice the dose by weight in the cup; this is a recipe choice, not a compulsory setting.
💡 Tip: Keep dose, beans and yield stable while evaluating the grinder.
3
Observe flow and taste
Record the setting, dose, beverage weight and shot time. A dial number alone cannot predict a fixed number of seconds.
💡 Tip: Try a lower number for finer grinding if flow is too fast; try a higher number if it is choking, after checking dose.
4
Change one variable
Make a small external grind adjustment, brew again and compare. Reweigh the dose because the same timed grind can deliver a different amount after adjustment.
💡 Tip: Keep a simple log instead of jumping between roast-number charts.
5
Use the manual for internal burr adjustments
If the external range cannot produce a useful result, first check basket, dose, preparation and cleaning. Internal burr adjustment is a separate procedure.
💡 Tip: Follow the matching BES878 manual and record the original internal position; do not translate a Barista Express number to the Pro.
When to change the grind number
Lower numbers grind finer; higher numbers grind coarser. Decide from the shot as well as taste. If flow is uneven, correct distribution and tamping first. If the result tastes good, there is no need to force it into a published time window. Keep internal and external settings in your notes so you can reproduce the recipe.
Manufacturer source
Breville BES878 Barista Pro instruction manual: 30 grind settings, starting suggestion 15, and the separate adjustable upper-burr procedure. This guide summarizes documented controls and practical recipe decisions; it does not report hands-on measurements.
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