Conti Prestina Dosing Suggestions

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Tillamook

#1: Post by Tillamook »

I am in the experimental stages with my new to me Conti Prestina. Everything including the spring is new and working perfectly. It is also maintaining very stable temperature. I have MANY different sizes of 58mm portafilter baskets for this machine.

I am looking for input from others who have this same group, and what they have found to be the sweet spot for dosing, and with which basket? I know I can eventually figure this out on my own, but I will go through ALOT of coffee to get there. Any help is appreciated

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drgary
Team HB

#2: Post by drgary »

My standard dose is 18 gm. Let us know how it works for you!
Gary
LMWDP#308

What I WOULD do for a good cup of coffee!

mikel

#3: Post by mikel »

Similar to Dr Gary,18 grams. I use a IMS 20 gram basket.

Paolo

#4: Post by Paolo »

Does your Prestina have the standard 5Bar spring or the 9Bar spring?

I use 20 gms in an HQ double basket with great success.

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drgary
Team HB

#5: Post by drgary »

And of course I vary dose, grind and temperature for different coffees. I once measured my spring pressure to start at 8 bar. My spring was a replacement installed when I restored my Prestina and I only use it occasionally.
Gary
LMWDP#308

What I WOULD do for a good cup of coffee!

Tillamook (original poster)

#6: Post by Tillamook (original poster) »

Thank you all for the tips. I have tried various doses with different baskets after reading Dr Garys Prestina User Experiences post. Surprisingly I had not done 18 grams doses yet. I share the same conclusion that none of these experimental shots were undrinkable. Today after reading the recommendations of 18 grams, I tried it for the first time. I accidentally ground a little tighter than normal, but WOW it was almost perfect in taste. I dont want to speak too soon, but all I will say is if I can repeat it exactly the same, I could live with this shot happily ever after.

Tjyven

#7: Post by Tjyven »

Approximately how big output do you get from your Contis? Just discovered these machines and seems like everyone who has them are really satisfied!

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drgary
Team HB

#8: Post by drgary »

I don't have time to measure this morning, but it's a 58mm group, so output depends on how you dose and how long you preinfuse. Keep in mind that Conti makes a single group lever now with the same group. I was enjoying my Prestina this morning.
Gary
LMWDP#308

What I WOULD do for a good cup of coffee!

Tjyven

#9: Post by Tjyven »

Yes understand that preinfusion will play a part in this, just curious in what area you usually land. See some old 58mm that have problem coming over 30 grams and others do over 40 for example.

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drgary
Team HB

#10: Post by drgary »

I have no problems with small output. It's usually the opposite, and I often pull shots when they start to blond. Also with a spring lever you can do a preinfusion, start pulling the shot, fully cock the lever again near the top of the pull and release (called a Fellini but that might not be quite accurate to the film sequence). I rarely do that extra catch unless preinfusing with spring pressure on a fine grind.
Gary
LMWDP#308

What I WOULD do for a good cup of coffee!