One Cup Coffee Brewing, Cheap (Free!) and Easy! by malkie13
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At my work we have a Mr Coffee, and it works great. We've also got a $5,000 espresso machine, it too, works great. Sometimes though, I just want one damn cup of drop brew coffee. Late in the afternoon, when the Mr Coffee has gotten to the scary 6 hour mark, or like these past two weeks, when I've been the only coffee drinker around, it's just not worth brewing a whole pot.

Sure sure, they make single cup brewers, as well as over the mug doodads that do exactly this. This, however, was FREE, made of stuff sitting around. Figured I would share. This is my first instructable, be gentle with me.

Materials:
Coffee Mug
Two toss-away coffee cups
Paper coffee filter (basket type is probably easier to use than the "wedge" style ones
Coffee (whatever sort you'd use to brew drip coffee, in my case, Folgers is what we keep in the cupboard, and since this is all about being cheap, it'll do)
Rubber band or paperclips
HOT water (a little more water than you want of a final volume of coffee)
Knife or other cutting instrument
 
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studiogrynn says: Sep 13, 2012. 1:22 PM
Great ible. I'll have to give this a spin. One question though: Do the words "$5000 Espresso Machine" and "Folgers" really belong in the same environment? Sacrilegious I say. Just down right sacrilegious.
malkie13 (author) says: Sep 13, 2012. 2:47 PM
Thanks! And yeah, I know. The best part being that there's a high end conical grinder right next to the espresso machine that was used for locally roasted beans, so it's not like we couldn't wrangle something decent for the non-espresso coffee. But hey, it wasn't my dime paying for it.
mphillips13 says: Jun 4, 2012. 9:09 AM
I just made this at home. Being single I didnt want a brewer. I want a small cup of coffee that doesn't taste like acid. Which a lot of instant coffees do. This was so smooth!! The coffee and the simple away to make it. Thanks.
malkie13 (author) says: Jun 4, 2012. 4:19 PM
Thanks! Glad to see that this 'able is still helping folks out. I eventually just ended up getting a small french press, but I've revisited this method a few times when away from home. It's quick, easy, and cheap.
ozwingchun says: Aug 11, 2011. 3:08 PM
hello,
was looking around and came across this. my question is why bother wasting a cup and cutting and all that when you can just put the filter over the mug itself and secure with the rubber bands.
i think youll save the time cutting and wont waste a cup either
poikiloid says: Sep 24, 2010. 12:24 PM
Nice! Worked well. Thanks.

I made 2 improvements:

1. Avoid the balancing act: cut the end of the paper cup that sits on the mug shorter, until the diameter is small enough so it acutally goes a little INSIDE the mug. This works probably on most coffee mugs, especially if it flares open a little wider at the top.

2. instead of rubber bands, try 2 small binder clips - faster and easier.

I've heard Tea is better for the environment (less water to produce), than coffee. I inherited to canister of coffee, so this is how I'll use it up. But if you're sticking with coffee, why not use a bit of reusable cloth, like a handkerchief, like some people have suggested, and skip the filters.
whisperonthewind says: Aug 11, 2011. 9:40 AM
Tea may be better for the environment, but for those who live for coffee, the environment and all the humans on it are most likely safer if we stick to coffee...

I've made my own 'coffee bags' ahead of time, and they work alright, although I don't ever know how much extra room to allow for grounds expansion. It's a guessing game. A cloth that would work well would have to be tight enough weave to prevent the grounds/fine powdery residue from seeping through, and it should be a dark color - visual aesthetics.
ubcfrenchie says: Aug 7, 2011. 5:22 PM
Just flip the disposable. Because it's tapered, the bottom will fit into your mug just fine and the lip on the top of the cup will make it easier to secure the filter with an elastic. If you want to save some time, you don't really even need to cut off the bottom of the cup. Just poke a big hole in the bottom, or cut an X to open it out. If you're really pressed for supplies, just bunch the coffee grounds in the filter and close it up with elastics, then dunk it like a bid tea bag into your mug. Good for days when you've had a run of guests and the disposables are all gone.
sridhara says: Jun 7, 2010. 6:32 AM
A handkerchief would do better than the filter paper as it would be tear proof as you pour hot water . Also a piece of scotch tape stuck on the side of paper cup and the coffee mug should prevent an accidental tilt. s uppala
passerby06 says: Jul 7, 2009. 5:37 PM
My understanding is that the Melita coffee maker (the original one-cup coffee brewer (?)) was originated by a German lady who, wanting a cup of coffee but not wanting to brew a whole pot, punched some holes in an empty tin can, lined it w/ a handkerchief and did what you've just described. Human ingenuity can be amazing, sometimes.
sierrabravo says: Jul 7, 2009. 7:02 AM
lol my coffee cup is sad too when it's empty
RedSnertz says: Jun 29, 2009. 4:13 AM
Great idea, and one that I'll keep in mind for when I'm away from my Coffee Press. What's a Coffee Press? Glad you asked. I'll let the illustrious Dan answer.

http://www.dansdata.com/aeropress.htm
knightsparkle says: Jun 28, 2009. 4:16 PM
Great idea - those little coffee "tea bags" taste nasty. One question though - can you use the paper cup small side down nesting in the mug and avoid the oaf issue or does this somehow screw up the brew process? Guess I could have tried it, but its past my caffeine curfew.
malkie13 (author) says: Jun 28, 2009. 8:30 PM
Well, at least with my particular cups, if I just tucked it narrow end down into the mug, it would go nearly to the bottom. Kinda hard to drip brew when there's nowhere to drip to.
xerxesx20 says: Jun 26, 2009. 6:12 PM
Nice little, fast, cheap (or free if your lucky) solution to the worlds oldest and possibly most frustrating issue. I have used the single in-mug cafetierre's, proper cafetierre's and expensive instant coffee. This is a good way to circumvent the cruddy old morgue-cold coffee left in the pot -- because some git has switched off the heater. Not to mention the fact that you only need to make the apparatus once (hardly complicated to redo if you sit on it or have another super-massive-scale industrial accident), just replace the filter paper, ground go-go beans, give it all a rinse and your away for the second time in the day. :-)
lil jon168 says: Jun 26, 2009. 9:58 AM
i just mad sum and mmmm it was so good
jp_pianoguy says: Jun 26, 2009. 6:44 AM
you can cut the rim off the disposable, that way it fits down into your mug.
jp_pianoguy says: Jun 26, 2009. 6:43 AM
Right on! It's better to make the coffee strong and dilute it with hot water afterwards. When you use more water than necessary, it begins to extract (wash) bitter compounds from the coffee grounds. 2 T per 6 oz water is about the right strength. I usually dilute this with about 1 oz afterward (I used to work at a Starbucks, so I like it a little strong). When I make it for my family, I dilute the coffee 100% afterwards (6oz water/ 6oz coffee).
mudgecko says: Jun 25, 2009. 4:52 PM
All good, and easy. Except for the "try not to be an oaf" bit!
Archergal52 says: Jun 25, 2009. 7:17 AM
I use one of the commercially available single-cup drip coffee makers (like this: https://shop.melitta.com/itemdy00.asp?T1=64+007&Cat=), but I occasionally end up somewhere where I just want one cup and don't have my filter-holder.

This is a great idea for those times! I've tried other methods, but didn't have much success. I'll definitely use this in the future.
malkie13 (author) says: Jun 25, 2009. 8:38 AM
Thanks! Those one cup doodads are handy indeed, and at only $3 you can't really whine about price. This was just a "Hey, I want coffee, no one else is here today, and I've got some time to tinker" things. I've actually made a different one by inverting the cup (narrow side down, gets rid of edge flow-out) and using a lid from a spent tub-o-grounds to make a collar to rest it on top of the mug with. It's the hobo version of the thing you linked, really. I'm planning on messing with a few different sorts of plastic bottles that are always floating around the office to see if I can make something less likely to wear out. That said, the cup in this instructable is the same one I used for the revised version, and has probably had a good 20+ cups brewed through it and is still going strong.
laptop_geek says: Jun 25, 2009. 6:58 AM
Why don't you just get a french press and not have to deal with the all the mess? or put the $5000 espresso machine to good use and make an americano?
malkie13 (author) says: Jun 25, 2009. 8:33 AM
Well, this was A) Free and B) There. I have a little French Press pot at home. I don't really want to buy another just for work, and transporting back and forth is headache (especially when I've got evening classes, it's just more stuff to tote). As for making an Americano, I do, on occasion, though it's really not the same fish. Espresso roast and ye olde tub of drip coffee are drastically different tastes. Sometimes you just want the Folger's.
jiniz says: Jun 25, 2009. 5:08 AM
Love the action shot! And this is really a cool idea. I'm going to try this one day when I'm the only one drinking coffee. I think I might use binder clips to secure the filter, though. Those might be a little more stable than trying to figure out how not to mangle the cup with the rubber band.
stephenniall says: Jun 23, 2009. 2:35 PM
this is a excellent idea i was bored and made one of these from a old curry sauce Polystyrene cup ibnstead of filters used a Hand tissue (thick ones) and it works perfecty im actually drinking it now !
grimjoey says: Jun 21, 2009. 2:12 PM
This is one of those awkward "why the hell didn't I think of that" moments. Pure genius.
RoBear613 says: Jun 19, 2009. 1:21 PM
You could just use a tea ball.
malkie13 (author) says: Jun 19, 2009. 1:46 PM
Tried that. To get it strong enough the steep time was long enough for the water to go cold. Coffee (non espresso, which relies on pressure to brew) needs a large surface area for the grinds to contact water. Short of a teaball the size of a raquet ball (or bigger) that's only 1/3rd or less full, it won't get it. French press pots work because you just dump grounds in, pour water over, and let it sit, using the plunger to push the grounds to the bottom once it's steeped enough.
RoBear613 says: Jun 21, 2009. 11:04 AM
I like the french press method, myself; I think the coffee tastes better than when it's filtered through a paper filter; more of the natural oils get through, i guess. I've seen plastic tea "balls" in the grocery that you put in a cup of water while you nuke it in the micro. Not sure I'd like it.
johnsmithcommercial says: Jun 18, 2009. 10:38 PM
I have been doing something like this for years. I have a filter basket from an old coffee maker; I put a filter in it, add coffee, hold it over my mug and pour in hot water. Just make sure that the basket doesn't have one of those spring-loaded doohickeys on it for pause-and-serve; just a plain old unobstructed hole.
SniperInTheDarkness says: May 30, 2009. 2:00 AM
Quite ingenious I must say. looks simple enough, now if only you could do the same thing with an espresso machine. =]
malkie13 (author) says: May 30, 2009. 12:08 PM
Thanks! I'd love to come up with something for espresso. Unfortunately, espresso needs pressure to brew nicely. Even the little stovetop pots build up a good bit of pressure in them. I've seen a handheld espresso brewer that uses little CO2 cartridges to brew. I'd buy one to try it out, but at $130 or so, it's a bit much.
makya says: Jun 18, 2009. 5:21 PM
there are a couple of instructables out there for handheld espresso makers
temp says: Jun 15, 2009. 12:21 PM
What? A handeld espresso maker that uses CO2 catridges? That's amazing! What next, CO2 BB gun and espresso maker all in a handheld package? Create a refreshing cup of coffee while dueling with your friends!
malkie13 (author) says: Jun 15, 2009. 12:30 PM
Yup, see: http://www.handpresso.com/ Seems pricey at $150.
RugbySteve says: Jun 25, 2009. 8:25 AM
I look at this and think, "I bet someone on here could made that"
temp says: Jun 18, 2009. 12:04 PM
Holy crap that's cool.
pineapplenewton says: Jun 15, 2009. 1:34 PM
Ive seen things that you put over a camping stove and its a small container holding water and espresso bean stuff and the water heats up and expands pushing it up a pipe about the container part and then down into the cup.
dnutman says: Jun 17, 2009. 6:45 PM
I'm not sure why this isn't working. The coffee keeps coming out a lightish, goldenish brown. I'm using almost boiling water and plenty of coffee grounds... maybe my problem is the filter? I would think they'd all be pretty much equal.
malkie13 (author) says: Jun 17, 2009. 9:29 PM
tabatj above is right about the time in contact with the grounds affecting the brew strength. Different filters do seem to behave differently. The unbleached recycled brown paper ones have a notably faster flow rate than the bleached white ones we have a mountain of at work.
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