Roasting my own coffee beans

Hey, my first OP!

I likes me some coffee. Every so often, I would see commercials for a home-use coffee bean roaster (but I can’t recall seeing them in a while). Basically, it looked like a canister with a big screw inside that would move the coffee beans around, so they would get evenly roasted. I’ve also seen some that look like a rock tumbler. But, they seem pretty expensive, especially since I don’t know that I would stick with it if it felt like too much hassle for not much gain.

However, remembering how the machine worked, I was thinking. If I got one of those popcorn poppers, like a Stir Crazy, would I be able to use THAT to roast coffee? I mean, it would keep the beans moving, and the base plate sure gets hot enough, I would think. As a plus, if I didn’t like it as a roaster (or even if I did), I could still use it for popcorn (and I know I like the popcorn from them). Pricewise, I could find one for a few bucks at a thrift shop.

Is this feasible? If not, why not, and what other (inexpensive) options would there be?

I have a friend who uses a hot-air popcorn popper to roast coffee. He just shakes it to keep the beans moving. It smokes like crazy while roasting so he does it outside, but it seems to work great. I think he went through several test batches getting the timing right, but you can test doneness pretty well with visual inspection.

I’ve considered doing this, but then I thought, if it’s a pain in the neck and/or expensive, I would really, really hate getting so used to the improved flavor of fresh-roasted coffee that there was no other way I could drink it…

You could also try microwaving it.

Ever-so-slight hijack: where in the world do you buy unroasted coffee beans?

Why, eBay, of course. Also, a quick google search found plenty of suppliers.

Hi, my wife (this be her account) asked me to look at this and post.

My name is Greg and I’m a coffee addict

(Hello, Greg)

Here’s the short version:

  1. Yes, you can roast your own using an air popper. Search alt.coffee (e.g., via groups.google.com) to find out which ones are good. Something like “air popper ebay” should turn up tons of posts.
  2. Yes, you can buy machines, ranging from slightly-better-than-air-poppers ($75) to state-of-the-art drum roasters ($300 - $3000 for one you’d want at home).
  3. Yes, you can buy beans online. Get thee hence to Sweet Maria’s Coffee . There are other sites; Coffee Bean Corral comes to mind, Google can find others. Sweet Maria’s is the BEST as far as providing good descriptions of the coffee and informative gear reviews, which I find helpful when buying.
  4. Why would you? Fresh coffee is better, period, full stop. Fresh means freshly roasted; green beans stay fresh for months if not years; roasted coffee stays fresh for days; ground coffee stays fresh for hours. The crap you get in a tin at the store was fresh sometime in living memory, but not now. I don’t consider myself a skilled roaster, but some batches I’ve made have literally been mood-altering, they were so good.*

Here’s the long version:

Lambo:

Yes, a corn popper is the most inexpensive way to get started; you can find them for $5-$10 at the Salvation Army if you’re lucky. I’ve never gone that route, but many people who do are quite satisfied with it.

The next option up is a specially made air roaster like the Fresh Roast Plus, which is what I use. These run around $75. My wife got me one for my birthday a few years ago and I’m just flat-out addicted to fresh coffee since then.

With any roaster, you’ll want to look at the reviews at Sweet Marias, do some googling in alt.coffee, and see what people say. All the various roasters tend to have a bias in the way they roast, and it’s a YMMV thing - if you like it dark, for example, avoid roaster X.

Finally - smoke. Coffee roasting generates smoke. If you live in an apartment, this may be limiting. I have to roast in the laundry room so I don’t set off the fire alarms. Some of the higher end roasters (like the Hot Top drum roaster) have filters to capture the smoke.
Ethilrist:

Yes, beware. I used to be able to drink anything, even day-old-sitting-in-the-glass-pot coffee. The more fresh coffee I drink, the less I like the rest of the world’s coffee.

Microwaving it won’t work - microwaves work by heating up water, roasting works by applying heat - but you can roast coffee in your oven. Most people who try it report middling success. You can also roast stove top; there’s a stove top popper available for $40, and I’m informed that back in the old days, people would just throw green beans in a pan and stir them.

Generally:

If you get into home roasting, you might also want to look into making coffee with a vacumn pot. Bodum makes a simple electric one; I’ve got the 25 oz version, the Bodum Mini Santos. MUCH better coffee than you get with a drip pot.

  • Here’s an experiment. If you can, go to Trader Joe’s and buy one of their coffee tins, which are packed with some sort of inert gas to keep the coffee fresh (interaction with oxygen - oxidation - is what makes coffee go stale). Open it, grind it, make some. Continue doing so. As the days pass, you’ll notice that the coffee has less Oomph, less flavor. That’s the coffee staling.

They have green beans at my favorite Lebanese grocery. My friend who was roasting with the air-popper was getting his shade-grown, fair-trade, ever-so-PC beans from a health food store.

Thanks for the response, Greg. However, I am looking for a bit of clarification on the above. In my OP, when I talk about a popcorn machine, I mean something like this, as opposed to an air popper. There was some discussion of air poppers right away, and I just want to be sure we’re talking about the same thing.

I don’t like air popped popcorn, so if I am going to do this, I want to go with the stir-crazy type popper, so that, if I needed to, I could use it for both coffee and beans (I believe the platter is teflon, so I wouldn’t think there would be much of an issue with sticking, etc).

Thanks for the help, and I hope you see this.

Ah! Sorry, my mistake, I scanned too fast.

Unfortunately, the Stir Crazy doesn’t get hot enough. It appears as though various people have tried; a good thread on alt.coffee discussing why it doesn’t work is here: West Bend Stir Crazy Roasting?. You can find other posts and threads with this search: Google search for alt.coffee “Stir Crazy”

There is also a Sweet Maria’s mailing list. While the noise ratio can be a bit high in there, it’s full of people who like to talk about various ways to roast coffee - the coffee equivalent of overclockers. You’ve got your drum-on-the-grill nuts, your heat-gun nuts, turkey-broiler-plus-insane-metal nuts, and so on. If there is any way to compensate for the Stir Crazy’s lack of heat, they’ll know it - but it’ll probably void your warranty, violate several laws, and earn the disapproval of society-at-large.

In short - if you want to give it a cheap try, look for a $5 air popper at a thrift store, which you can turn around and sell on Ebay if you don’t like it.

Greg, any insight into roasting your own beans for espresso? I currently buy them from a local roaster, vacuum packed, and grind them at home in a burr grinder, and it makes for the best espresso I’ve ever made at home (exceeded only by that brewed at the roaster’s). The roaster would be glad to sell me a ton of unroasted beans. Could I expect that large an improvement for espresso?

Espresso roast is just a darker (more time and heat) roast of coffee, so you absolutely could roast your own espresso beans. The darker the roast, the longer a rest there should be between roasting and brewing. I seem to recall that three days after roasting is when espresso beans hit their peak. Different varieties of beans are more or less suitable for espresso roast.

Having said that, if the vacuum-packed stuff you’re getting from the local roaster is freshly roasted, e.g. not sitting on the shelf for a month before you get it, then you probably won’t be able to realize any huge improvement. In my case, although there are coffee roasting shops in the area, none are convenient enough that I want to swing by them on a regular basis. (YMMV.)

Greg

Thanks, Greg! Maybe I’ll experiment sometime in the future with roasting my own, but for now I think I’ll let my local roaster do it day to day.

My brother is into that roast-your-own thing, and he does his in a wok on the stove, in small batches.

I do mine in a sesame seed roaster. I think that’s about as minimal as you can get. Keep in mind that coffee oils will get into your popcorn if your roaster/popper is doing double duty.

google it and you’ll find a lot of info. I’ve been trying to find a decent little home roasting machine but haven’t been successful.

There’s a book: “Home Coffee Roasting: Romance & Revival” by Kenneth Davids. More than you ever knew there was to know about it.

Talks about the various methods and equipment and their advantages and disadvantages.