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Thread: Breville temp?

  1. #1
    Junior Member
    Join Date
    Sep 2007

    Breville temp?

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi guys,

    Im sort of new to this so unsure if im putting this in the right group. I have *Breville coffee machine (150 bar) which I bought a few years back. I also have a the EM480 burr grinder.
    Question 1: Im wondering what sort of temperature does the coffee need to be when its extracted through the machine?
    Question 2: With different grinds on the EM480 will I get a different temperature when extracting coffee or should it be the same from coarse to fine grind?
    Question 3: Would a higher bar machine affect the time to extract coffee? Is there higher bar machines out there?
    Question 4: What is the optimum bar pressure for a machine? What machine would you recommend? Would the bar pressure affect temperature?

    Whats actually happening is when I test just the WATER from the machine WITHOUT the coffee grind, I get a temperature of 70-75 degrees. When I extract a specific COFFEE (7 grams thats ALL i can stick in the portafilter basket!) I get around 38 to 40 degrees? A bit too cold for me! :) Though its not the same with all coffees, some are in the 60 degree range when extracted. Mind you I DO NOT keep the coffee beans in the fridge and grind just few minutes before extraction. Would tamping and how I put my grind in the portafilter basket be a factor with temperature?

    Can anyone point me out to a website that are worth checking out on HOW to make coffee?
    Any help would be gladly appreciated.

  2. #2
    Senior Member Magic_Matt's Avatar
    Join Date
    Sep 2007

    Re: Breville temp?

    Hey Jacek, Im a fellow newbie so dont have too much advice but I can answer the pressure question - 15 bar seems to be standard across pretty much all thermoblock machines; temperature stability is more important than pressure as I understand it. From memory, somewhere in the vicinity of 80-90C is required, but thats the temperature of the water coming out of the group head not the final brew. Ive also found that pre-heating the cup with boiling water makes a huge difference to the final temperature with my cheapo Sunbeam machine.

    The firmness of your tamp will probably have an effect on the end temperature, but someone more knowledgeable than me will be able to give you a better answer to that question. It definitely affects the time taken to pour the espresso - theres a golden rule along the lines of 30 seconds for 30mL of espresso, but thats assuming youre using single-walled coffee baskets rather than the double-walled ones that probably came with your machine (they have a second skin with only one hole that the coffee exits through and are a Very Bad Thing as I understand it).

    In regard to how to make a coffee, youve made a good start coming to this site - Ive found people here to be very generous with their considerable knowledge of all things espresso :)

    Also if you search through the old threads on this site youll find plenty of good info (Ive found searching with Google better than the built-in search tool though).

    Anyway, as I said Im also new to the site so hopefully at least some of that advice is on the right track!

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