What type of roaster?
I have built a rotating Stainless colander using a electric can opener to power it. Im using a heat gun on a stand to roast them. I also mounted an exaust fan in a bucket for cooling the beans. I hope this thing works.
I bought 2.5kgs of Rwanda Nyungwe. Would this be good for lattes?
Didn't want to go down the track of a corretto?
That a heat gun in a bread maker right? I want to be able to roast in a higher quantity. Correttos only do 200-300 gms?
Try 700g for a corretto. Others have gone much higher. My normal roast in a corretto is 600g
Last edited by saoye; 24th November 2012 at 09:31 AM.
Sounds interesting. Does the colander rotate? Or does the can opener power a mixing arm in the colander?
I personally use a corretto -350g per batch, but can handle much more. 350g is a perfect amount for 1 weeks use in our house - keeps us in the 7-10 day sweet spot :-)
Will wait with bated breath for the photo!
Certainly looks the part - look forward to hearing how it goes!
I had the same thought
Lots of CS'rs roast in a stainless dog bowl with a heatgun and a wooden spoon to stir... so it can be done in an open style roaster ok.
I love the setup of this, electric can opener motor is clever, nice low gearing and as long as not too much heat is transfered through the drive shaft it should be fine.
Word of advice... don't try too many beans first few times, while you might be able to hold a kilo in there the limiting factor will be how much heat a 10amp heatgun can produce and if I had to guess I would say 500-600g would be about the limit. If you load it up too much the roasts will be too long or too motley.
Plan "b" might be to try a camp stove on low flame under it, that would keep the basket warm and the heat gun will have more control over the roasting.
Look forward to seeing how this one goes though.
Very impressed. Looks the cat's whiskers, ratty. Best of ...
smaller first roast.jpgMission successful!
Although first crack was 16:40 . probably because i had the heat gun on low for the fisrt 5 mins and about 120mm away forom beans. I couldnt help my self and tried 500gms. maybe too much. second crack was at 20 mins. The roast turned out very even and slightly shiny. I was impressed with my first effort.
Nice! Well done.
Sometimes shiny beans may mean you've gone into rolling second crack, which is at the darker end of the scale. Bit hard to tell from the pic how dark they actually are.
A lot of roasters dump the instant the first pop of second crack is heard or just before (where a temp probe helps in which case the beans will look quite 'dry' on the outside for at least a few days. But I wouldn't worry too much about the 20min roast - most of mine in a corretto are about 18mins, and roasters like the Behmor seem to aim for about 20mins for 500g.
What's more important - how does it taste!
And you have a proof of concept!
Yeah it works better than i thought. I glad 20 min isnt too bad. Ill set the heat gun on full from the begining next time and dump as soon as i hear 2nd crack. I waited about 1 min into 2nd before i dumped.
Ill see how it tastes 3 days time. patience patience patience hehe
I'd still think about leaving some type of pre-warm for the first few mins (even if it is full power, but move the gun out 5cm or so), just to dry out the beans. If you go flat out right from the start you can get faults like divots/craters occurring.
So a gentle warm is quite good form!
But yes - also try pulling the beans back in degrees (30sec into second crack, right on second crack, just before second crack) and see what works the best in the cup for you. This is how we've all learnt!
But you should be pretty happy with that for a first batch - to get to second crack with that amount in that ball park time is quite an achievement!
I reckon (IMHO) about 3mins is a good time :-)
Wow! CS = always impressive!!
2 days after roast. Pulled my first shot this morning using my first roast. It has a slight burnt taste to it. I wish i could describe in more CS lingo but i dont taste any sweetness. I think I over roasted. The beans look very oily now. Could sweetness develop within the new few days?
I couldnt finish my latte, eek. Should i through this batch away?
Don't throw them away.
Keep trying a coffee each day with them and see if they improve.
It does sound like they were roasted well into 2nd crack if they are very oily at 2 days post roast, but this is how we learn.
If you are not enjoying them, by all means get some other beans to have as your daily coffee, but I would suggest you keep taste testing these for the next 6 days or so. If they really don't improve, then pull the next roast a bit earlier.
Sometimes with dark roasted beans you need to use a much coarser grind/faster pour to prevent bitterness/burning in the shot, while with lighter roasts you can really tighten it up to almost dripping pour and not get bitter/burnt flavours. Just the nature of the roast depth. This is why most try and roast that bit lighter - it is easier to go one way than the other!
I've had some roasts I've thought were overdone, but with a bit of playing with the grinder found them OK in the end (better in milk than straight espresso mind you). But they normally weren't that far into second crack.
I'd initially try a slightly faster pour and test if it is any more drinkable - but if the beans really are actually burnt - then no amount of portafilter-gymnastics is going to help I'm afraid!
Then you put it down to a $5 life lesson, and try again :-)
Too true :-)
And worth persisting! When you truly nail your first home roast, you'll never look back!
Just did my 2nd roast. An interesting experience....
1stCR 16:08.... Couldnt get to second and stopped at29:00 . I think i had the gun too far away , about 15cm i gradually moved it closer ending up about 8cm away for the last couple of mins. The stopping point was when the can opener started to stall. Hot weather here in melb and a bit of heat transference through the shaft and the motor felt quite warm after 29 mins of work. The results look good though
How did that second batch taste? Looks really tasty... Brb coffee!
Looks so much better than the first bacth Ratty
Well done :-)
Tested out my roaster today to see if the thing would turn after it stalled at the end of the last roast. No go, The can opener overheated and melted the grease from the gears inside on to the motor. I went to Savers today to see if i could get another electric can can opener but none there. BUT, they had a bread maker. Im going to give the Corretto a shot. wish me luck