Announcement

Collapse
No announcement yet.

Shocked at Loss of Bean Mass when roasting!

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    Re: Shocked at Loss of Bean Mass when roasting!

    Originally posted by Andy Freeman link=1160534386/0#13 date=1160578673

    so you guys further north in the more humid climates might start with a higher water content  before roasting depending on how exposed your beans were and for how long they have been absorbing airborne wet stuff.
    Wow, thats like value adding. My 2.5 kg of beans may end up as 2.6 kg in a month or two and than I can sell of the extra 100 gm and still have my 2.5 kg.... wait another month and sell off another 100 gm and so it goes.

    I wonder why no one has thought of this before?  

    Comment


    • #17
      Re: Shocked at Loss of Bean Mass when roasting!

      Originally posted by Sparky link=1160534386/15#15 date=1160713710
      I wonder why no one has thought of this before?
      They have! Havent you ever heard the tale of Jack and the Magical Beans? ;D ;D ;D


      Java "Counts his beans by the light of the full moon" phile
      Toys! I must have new toys!!!

      Comment


      • #18
        Re: Shocked at Loss of Bean Mass when roasting!

        Yes, there is weight loss and there is a range. But now that youve all gone bean-hopping mad with the RS232s, and that roast profiles can be plotted and some control can be exercised over how the beans develop, weight loss information can:
        - be one of the variables to track consistency in roast profiles (eg. if that Costa roasted the same way as the last registers similar weight loss +-0.2% means youve nailed this roast)
        - if you dont have a moisture meter, weight loss of one lot of beans can be compared to weight loss of another lot of the same origin
        - give an indication of changes to the beans if youre experimenting with roast profiles (eg. I roasted the Costa to the same colour and to the same endpoint but one batch I extended a certain part of the roast for a minute longer while the second batch is pretty much straightforward. By sight, the same. By weight and by cup, quite different.

        Weight loss can be a good thing...for me anyway

        HD

        Comment


        • #19
          Re: Shocked at Loss of Bean Mass when roasting!

          Over my past 65 roasts (total for this year), the average decrease in mass is 15.83%.

          Comment


          • #20
            Re: Shocked at Loss of Bean Mass when roasting!

            I was a bit slow to pick up this thread, busy weekend, etc, but am glad it was raised because I have been wanting to compare. (I am also looking forward to comparing results from the datalogging set once we are all up and running.)

            My roasts average 17.89%, with a low of 14% Brazil Cerrado Bold (Sun Dried) and a high of 21% Costa Rica Santa Elena.

            Will be interesting to see what impact the warmer weather has with less moisture etc.

            The good thing about my heeding the advice to keep a database when I started roasting is that I will soon have annual comparisons, how good is that!

            Comment


            • #21
              Re: Shocked at Loss of Bean Mass when roasting!

              I roasted up 2.8kg of beans the other night and weighed them up tonight before grinding them up for CP and I ended up with 2.73kg. A weight loss of 15.4%.

              The blend is 7 parts Nicaraguan Angelina Estate, 4 parts PNG Kimel X, and 3 parts Peruvian (I forget which estate). The beans were roasted as SOs in 200g batches with a couple batches of the Nicaraguan being taken just into the roll with everything else being pulled between the first snaps of 2nd crack and just prior to the roll.

              It smelled really nice being ground up and I cant want to taste it tomorrow!


              Java "Sniffin da Bean" phile
              Toys! I must have new toys!!!

              Comment


              • #22
                Re: Shocked at Loss of Bean Mass when roasting!

                Originally posted by Javaphile link=1160534386/15#20 date=1161765674
                I roasted up 2.8kg of beans the other night and weighed them up tonight before grinding them up for CP and I ended up with 2.73kg. A weight loss of 15.4%
                Sounds very nice. Love the Nicaraguan beans.

                But are you sure you ended up with 2.73KG from 2.8? that works out to a 2.5% loss. :-/


                Belinda

                Comment


                • #23
                  Re: Shocked at Loss of Bean Mass when roasting!

                  Originally posted by Corretto link=1160534386/15#21 date=1161766156

                  But are you sure you ended up with 2.73KG from 2.8? that works out to a 2.5% loss. :-/


                  Belinda
                  I think he meant to type 2.37KG.....

                  Ahhhh Java - Too much coffee makes you dyslexic! ;D

                  Comment


                  • #24
                    Re: Shocked at Loss of Bean Mass when roasting!

                    Originally posted by Corretto link=1160534386/15#21 date=1161766156
                    Sounds very nice. Love the Nicaraguan beans.
                    Yeah theyre a great bean! I really like them! A strong rich flavor thats not over-bearing with a nice touch of spiciness. Uuuummm.....Yummy!

                    But are you sure you ended up with 2.73KG from 2.8? that works out to a 2.5% loss. :-/
                    Arg! LOL Sorry, I transposed the digits. I ended up with 2.37kg of beans. :-[ :


                    Java "One of these days Ill learn to type what Im thinking!" phile
                    Toys! I must have new toys!!!

                    Comment


                    • #25
                      Re: Shocked at Loss of Bean Mass when roasting!


                      Thought it must have been a typo :-)

                      I found since recording the loss Im averaging 18% over the last 5 roasts.

                      Wonder if the relative humidity at the time has anything to do with it (which was around 50 to 65% for each roast) ..........



                      Belinda



                      Comment


                      • #26
                        Re: Shocked at Loss of Bean Mass when roasting!

                        expect anything from 11% to 25% loss in weight depending on beans and roast profile.

                        Comment


                        • #27
                          Re: Shocked at Loss of Bean Mass when roasting!

                          Originally posted by Corretto link=1160534386/15#24 date=1161767245
                          Thought it must have been a typo :-)

                          I found since recording the loss Im averaging 18% over the last 5 roasts.

                          Wonder if the relative humidity at the time has anything to do with it (which was around 50 to 65% for each roast) ..........

                          Belinda

                          Belinda, that figure is pretty much what Im experiencing (17 per cent)

                          220 grams goes in....183 or so comes out.

                          Part of that is our backyard contribution to global warming. Soon, Andy will have to add a carbon trading tax to every shipment. ;D

                          -Robusto

                          Comment


                          • #28
                            Re: Shocked at Loss of Bean Mass when roasting!

                            I always account for 25% regardless. If I have a little left over, so be it.

                            Comment

                            Working...
                            X