Fast and spraying espresso pull on Breville Infuser with coffee ground using Smart Grinder Pro

Beginner and pro baristas share tips and tricks for making espresso.

#1: Post by glow »

Please advise on how I should correct my espresso making.

Tried grinding between grind size 14 to grind size 4 on my breville smart grinder pro but it didn't seem to slow the shot down at all or help with channeling (worried about clumping).

Have been experimenting shots at grind size 4 with the use of wdt stirrer and without to see if that helps with channeling but it doesn't seem to make a difference :(

Without wdt stirrer but taps on base before leveling and tamping (18g in, 36.6g out in 15s)

With wdt stirrer before leveling and tamping (18g in 38.8g out in 17s)

Attaching some photos of the grinds, pucks and espresso shot for reference if they are of any help!

Thank you in advance!

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#2: Post by Jeff »

The flow rate looks very high for a classic espresso roast.

Several things to check first, before chasing solutions to problems that don't really exist:

* Grind finer
* Make sure your coffee is fresh

Typically, "espresso roast" coffees become hard to extract well after a few weeks after roast, in a roaster-sealed bag. I don't know how your local roasters package their coffees or label them. Here in the US, things labeled "best by" instead of "roasted on" tend to be stale by the time they reach the market shelves.

I don't know the Breville models too well, but I've read that some of them with thermoblocks (or "thermojet") brewers benefit from a short flush to get the brew temperature up to where it should be, before locking in the portafilter and pulling the shot.

glow (original poster)

#3: Post by glow (original poster) »

Hey Jeff! Thanks for responding! Yeah the shots are really quick and I can't seem to figure how or where to start troubleshooting from.

Will get down to the lowest setting on my grinder to see what happens for my next pull and update again.

These shots were pulled on 23nov and the roast on date on the bag is 14nov. Would that be considered fresh in your view? Beans (espresso roast) are from Hulia, Colombia, mixed variety, washed for processing if that helps? I keep them stored in vaccum containers with the air removed each time I'm done using the packs to try and prolong them as much as I can.

As for the flushing, I do flush the grouphead for a few seconds and dry it off with a dishcloth before inserting the portafilter for each shot.

glow (original poster)

#4: Post by glow (original poster) »

Updates! Got my grinder to grind size 1 (lowest setting without adjusting the inner burrs) but that didn't choke my breville infuser :(
Used a wdt stirrer. 18.6g in, 38.6g out in 24s. Still observing spraying as well.

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#5: Post by Jeff »

"Grind finer"

I believe that there may be an internal adjustment that allow you to shift the range (finer).

This seems to be from "BrevilleSupport"

glow (original poster)

#6: Post by glow (original poster) »

Thank you for sharing the video. I will make some adjustments and try again before updating on how it goes.

Also, do you think grinding finer will help to resolve the spraying issue as well?

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#7: Post by Jeff »

It looks to me that the puck integrity falls apart because the grind is too coarse. The "spraying" may just be part of that.

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#8: Post by jasiano »

I used to have a Breville Infuser. They are a real pain to get pretty shots on, I think because the pressure is set VERY high on them for a start.
Also what basket/bottomlesss PF are you using? I bought a bottomless off eBay for that machine, the basket that came with it was rubbish, was much more consistent with thee stock basket and the cheapo bottomless PF.

Also had a smart grinder pro and I could get it fine enough to choke the machine, but only with fresh beans. Anything too stale and regardless of how fine you have set the grinder, it's going to spurt & gush.
How long since the beans were roasted?

EDIT: also, I used to find that 18g was too much for the stock basket. May not necessarily be the cause of your issues, but I found 16g was about right, too much would rub/contact the group shower screen and the water wouldn't flow right.

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