ACORN Coffee




About: "Any fool can make things complicated, it requires a genius to make things simple"

Acorn Coffee...?!?

Well, I've heard about this for years and being into bushcrafting I've always fancied trying it out for myself.

Earlier this year when I noticed a good acorn crop from several mighty oaks, I thought I'd give it a go.

* Just a note though: Thanks to some great responses by my viewers I would like to add Acorns contain a lot of tannin and need to be prepared to remove the excess before using.

On the good side though tannin gives them a tea and coffee-like quality and they were much used to make drinks in the past. Traditionally the acorns would have been shelled and soaked in a river for several days to leach out the tannins before being roasted.

Here's a wiki link to tell you more about it ""

Now, this acorn coffee doesn't actually dissolve like normal instant coffee so it does need to either go through a cafetiere or a coffee machine. Or even put it in a cut off section of tights, wrap a string round the top and use that as an infuser.

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It's best to wait for the acorns to drop from the tree when they're brown, but you have to be quick as the cheeky squirrels are ready to gobble them up. Also if they've been lying on the ground too long you get little holes and maggots in them.

Gather them up and pop them in a bowl when you get back home. Clear away any cups or leaves etc and just have a closer look to see if they're ok. Any split, soft damaged or holy ones just discard, we threw them back in the woods for the squirrels.

Put a large pan on the stove, put the acorns in and fill it with water so it covers them. * Bring to boil and boil for 15mins, topping up the water if you need to. This will kill any maggots in them that you've missed and also soften the shell for easier shelling. Also this will remove the tannin in the acorns making them good to go.


Tip into colander and allow to cool then make a cuppa as the next bits gonna take a while.

Although the boiling would have softened the shells somewhat, they are little tinkers to peel. I ended up with using a big knife to cut them in half and pop the nuts out. I started with myself and my 2 kids and a while later ended up just myself. It's a pain, but gotta be done.


Time passed and before long I ended up with a decent sized oven tray of just nuts and loads of discarded shells.

Again, this is a good chance to visually inspect your acorns as you may have missed the odd hole in some earlier. Softer ones, discard as there WILL BE a grub / maggot in there, or its been in there and left it bad.


Any ones that we are discarding we are taking back to the wood to give the squirrels a tasty treat.

Shells and all as they will all rot down and add nutrients to the soil. If you take, you have to give and thank the trees for sharing their bounty.

Then put the tray with nuts on in a preheated oven, about 180oC to roast. Keep checking them and moving them about so they roast evenly. You could leave the peeled nuts to dry for a couple of days before you do this, but we really couldn't be bothered to wait that long and so roasting took a little longer.

The time would all depend on your oven and quantity of nuts, its not rocket science, they're just nuts, keep an eye on them and pull them out when they look like dried nuts, slightly darker in colour and a lovely nutty smell.

Step 5: GRIND

When they're ready, it's time to grind them down.

I don't have a posh coffee grinder thingy so I put a few handfuls in a jug, shoved a hand blender in with a cloth over the top.

And off we go. They make a right racket, sounds like your chopping stones, but really satisfying all the same.

Keep going through your stash and don't pull the cloth off whilst you're doing it as THEY FLY OUT EVERYWHERE :-)


When you've done your stash, tip them onto the oven tray again and pop them back into the oven.

This time, watch them more carefully as they will roast alot faster as they're smaller. Keep mixing them around to ensure even roasting.

The smell is really nice, roasting nuts kinda smell.


I roasted mine until it was the same colour as a popular brand of coffee which we drink and then pulled the tray out of the oven and set it aside to cool.

Which one is the Acorn coffee do you think, left or right..?!?


It was the one on the left. But there really wasn't that much in it.

I used 1 1/2 tsp of Roasted Acorn Coffee and put it in my coffee maker once it had cooled.

It splurted out a deliciously smelling, dark looking coffee like hot drink.

Now I'm not actually a coffee lover, I love the smell, but find the taste a little too bitter for my liking, I'm a TEA drinker and always have been. I'll have a coffee, but it has to have a lot of milk in it for me to enjoy it.

Oh my goodness, I really enjoyed my mug of Acorn coffee, it was pleasant and satisfying without any bitter taste, it had similarities to coffee, but being as its not coffee it didn't taste like coffee, but it was really nice.

We all tasted it black first and it was pleasant, but once we had added a little milk to it, it was yummy.


Try it and see for yourself.

Acorns are freely available now (October) and if you've got the patience to peel the little blighters, they really are enjoyable as a warming drink on a cool autumns eve.

Thanks for reading and hope you've enjoyed my Acorn coffee instructable.

Cheers ;-)

DISCLAIMER: It may not be for everyone, if you've never had acorns before, do the safe taste test by rubbing a bit on your lip and waiting to see if there's any reaction etc, then your tongue, if you're sure you're not allergic to it then its upto you. By making and consuming it you do so at your own risk.

I've made it, I've drank it. My families drank it and we're all A-ok. It's upto you.

I've also found this link "" which is REALLY INTERESTING and thought I'd share it with you too.

Thanks ;-)

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    77 Discussions


    11 months ago

    What are the nutrition facts? Is there anything similar to caffeine in it? I ordered one can ( from Poland) on Ebay and gave me the same reactions as coffee.


    3 years ago

    I am very surprised by good taste of coffee from acorns. Recently did this myself how it tastes and it is quite good. I'll take inventory of her home. Interestingly there are several recipes for her but do not know what is the best, maybe preferable to try to do them all. Can someone already knows best?


    3 years ago

    You can also shell them slice them thinly, boil 4-5 times changing water each time and then roast the nuts. I use this method.


    4 years ago

    I have a better easier way, fast! If you can pick only white oak acorns, (small, brown, squat, striped) these are low in tannin & sweet. Place two handfuls in a tray. Bake at 400* 40 min. Throw all in a 3 qt pot of simmering water. Boil 20 min & strain. Your done! Nice iced. Add honey if you like. Throw the acorns back to squirrels. Wheee


    4 years ago on Introduction

    Thank you for sharing this. I've been wanting to make acorn coffee for some time. I do believe acorn coffee originated during the American Civil War. Confederates had no coffee and hardly had anything to feed themselves with. They'd gather acorns to boil over a fire, they'd smash the acorns with the butts of their rifles to "grind" them, then they brewed the grounds. They'd often throw in the hardtack into their acorn beverage to soften it up. They also used acorns to make acorn flour since conventional flour was very rare for them to have.


    6 years ago on Step 9

    OMG this is awesome! I've been going to a big local park and noticed these nuts for about YEARS. Nobody knows what they are (acorns are not popular here) and they just fall and rot. I've always wondered if they were eatable, also: I LOVE coffee, and this is perfect timing to do it. I'll definitely go and collect a bunch, THANKS!

    5 replies

    Reply 6 years ago on Step 9

    It is an awesome tutorial and I thoroughly enjoyed (and laughed at) blueangelical's humorous comments too and think I'm going to try this, but please make sure what you're gathering are acorns and haven't been sprayed with pesticide (you can ask the park keepers). There're also hazelnuts (filberts) which are also perfectly edible but I'm not sure if you can make a drink out of them?...although hazelnuts make a delicious nut butter. Just be absolutely sure to identify whatever it is you're making to ensure it isn't a 'toxic to humans' nut. I don't know where you live but I'm a bit surprised you have so many left untouched. Where I live (in New York), the squirrels scoff 'em up nearly as fast as they can hit the ground. :) The exception is when they land in the pool...and leave little tan stains all over which are almost impossible to get out.
    Btw you can also use your abundance of acorns in their little cups as part of a fall wreath decoration. :)


    Reply 6 years ago on Step 9

    I love hazelnut flavored coffee so I don't see why you can't use them this same way. Though I have heard someone adding the whole nut to their coffee maker for a fresh hazelnut flavor. I have my young uns collecting the neighbors acorns, both red and white oaks, so we can try this.


    Reply 5 years ago on Step 9

    Hi Jodi: of course, you're right. Don't know what I was thinking, lol. I LOVE everything hazelnut. I suspect my brain was on the 'raw' compared to 'roasted' track, and thinking wild hazelnuts might possibly not be 'as' good, but it's a feeble excuse. I'm a huge Nutella fan too as BlueAngelical has mentioned, but I just discovered (at the local Odd Lots during my very first visit there last week)(who knew they carried all these European goodies--yum!?), an Italian version of Nutella spread called Nutkao. 13oz for $2.50 so very affordable and scrumptious for the small amount I use. Don't know if it's totally comparable ingredient-wise, but just mentioning it for those hazelnut lovers among us. :) I DO love your idea of tossing a couple of whole hazelnuts into a coffee grinder and will now try that for my next mix. Haven't yet collected enough Acorns to give this coffee a go--one of my elderly kitties has been ill so has been taking up all of my time but he seems to be on the mend so 'a-hunting acorns we will go' although no kids here to help with the peeling, I'm afraid. :(


    Reply 6 years ago on Step 9

    That sounds yummy. Nutella is hazelnuts isn't it.

    My kids loved the drink, kept them busy for hours peeling the little blighters too, I'm sure yours will enjoy the peeling too ;-)

    Thanks for the comments.


    5 years ago

    Nice. Why don't you do one of these about gathering and eating those with LOTS of pictures.

    I'm sure it would make interesting reading.... good day to you too ;-)


    5 years ago on Step 3

    Years ago when I lived in the woods for weeks at a time with no provisions I found the white worms in Acorns are a good source of food...Just pop them in your mouth and swallow..In fact there were times I sat on the ground under an acorn tree and gathered the bad ones just for the worms inside. They are NOT maggots and they ARE edible..NEVER chew them just swallow them whole as they are and your stomach will do the job for you. I never washed them off either. just pop them in your mouth like a bird would do... A couple of black carpenter ant's are good tasting too. Eat only a few or they make your stomach acidly... Bit their heads off first so they con't bit you, chew a couple times and swallow..The way to get the tannic acid out of acorns is to use sand and fresh water....You make a shallow pond with a levee of sand all way around. Fill the pond with acorns and water. The water will seep out through the sand. Fill it again. use normal temp water no need to boil.. Keep this up for a few days and then test an acorn. When it's no longer bitter it's ready to eat or make coffee with..Good day, Chief..


    6 years ago

    Bummer. Well thanks for trying it anyway, sorry to hear they didn't turn out nice for you after all that work. May have been the variety of oak you have, just the amount of times you had them boiling tells me they must have had loads of tannin in them.

    Don't forget though, it shouldn't actually taste like coffee as it isn't coffee beans, its acorns, the coffee bit I believe is because after prepared it has the appearance and texture of coffee.

    Couldn't fault my batch, been giving it to friends and family with great feedback. Anyway 10/10 for trying, thanks ;-)


    6 years ago on Introduction

    Awesome instructable. I enthusiastically tried it: I gathered about a gallon of acorns from my back yard (coast live oak), boiled them for about half an hour, shelled them (for about 5 hours), boiled them again (four times for about 15 minutes each), baked them, ground them (in a blender), and then roasted the grounds until dark brown. I ended up with about a pint of "coffee". I brewed a cup by soaking grounds in boiling water for 5 minutes, then pouring the "coffee" off the top.

    The taste was terrible. Not like coffee at all: more like very, very strong Oolong tea. I made it through about half a cup before throwing it out (and, as my wife likes to say, I will usually eat anything). It may be that mine still had too much tannin, even after boiling 5 times total. I'm not sure.

    acorn coffee.jpg

    6 years ago on Introduction

    Hmmmmm, we have huge pin oaks on our property, I'm pretty sure they are have higher levels of tannin.....but perhaps if I boiled them longer!

    Great Instructible!


    6 years ago

    Mmmmm, that'll be a no, ain't got one of those, sounds good though. After boiling, they don't exactly crack as the shells are soft, hence the peeling and not cracking ;-)


    6 years ago on Step 9

    Have never tried it but know it was quite popular during WW11 where coffee was rarely available. Acorns are abundant locally (Delta BC) Must give it a try. Very nicely explained. Thanks. I wonder how it compares nutritionally.

    1 reply

    Reply 6 years ago on Step 9

    I did not know I slept so long that I missed 9 World Wars ;)

    As for nutrition check out


    6 years ago on Step 4

    I know some one that roasts coffee and they use a hot air popcorn popper since they found it gave more consistent results than the oven you could give that a try if you have one.