Aroma visualization from community tastings
Foursquare ECS XX Isonomy 2005
Fans of the Barbados profile rate this one of the best ECS releases, though a few shrug that it's "just a solid ECS" like the rest. Seventeen years in ex-bourbon casks give it more wood and dark chocolate than usual, with vanilla, dried fruit, coconut and a minty edge. Well-integrated for 58%, though a couple found it borderline too sweet or one-note.
The community says- Great balance
- Chocolate and dried fruit
- Similar to other ECS
View price history
Secure payment Sold by Klac Returns & cancellation
- Secure payment. You pay via RumX with PayPal, Klarna or card. Your payment data is encrypted and we never store your full card details.
- Clear seller. Sold and shipped directly by the partner shop. And you're never on your own: RumX handles support and communication with the shop, so you always get excellent service, whichever shop you order from.
- Honest shop ratings. The stars show your service experience with the shop, not the rum score. They come from RumX users, and critical ones stay visible.
- Returns & cancellation. Your purchase contract is with the shop, so returns and cancellations run through them under their own policy and your statutory rights. If anything goes wrong, RumX helps you sort it out.
Buy Foursquare ECS XX Isonomy 2005:
Compare all 5 shop offers from 185.37 €
Prices & availability last updated on
The look inside the bottle
How does Foursquare ECS XX Isonomy 2005 taste?
Aggregated from 136 community reviews.
Woody, chocolatey, well-balanced Foursquare Most rate this near the top of the ECS line — wood-forward, chocolatey and beautifully balanced. The only real gripe: some find it too safe and not that different from other Foursquares.
Foursquare fans and anyone who likes woody, dried-fruit sippers
People wanting something wildly different from the classic Foursquare profile
How the community classifies this rum. Each category takes you to similar rums.
46 of 136 left detailed tasting impressions · Click an aroma to explore similar rums
How is Foursquare ECS XX Isonomy 2005 rated?
RumX’s 0–10 scale is strict: 8.7 sits in the “Very good” band. 98% of tasters rate it Good or better; only 0% rate it below average. See the full rating guide →
Live auctions
Current bids for this rum at Europe's leading auction houses.
Community voices
What does the community say?
6% rate it between 6 and 8. 20 selected write-ups from 136 community ratings. You can view the complete list in our app.
Review by Jakob
The high age suits the rum well and brings thanks to the wood influence still a little more vanilla melt from the bourbon barrels. Also overall with recognizable proximity to American whiskies with fresh oak, present spice of pepper, cinnamon and cloves, concise toffee, dried fruit and subtle minerality. Very good Foursquare representative.
Review by zabo
2 Edit: Currently one of my favorite mixers as CubaLibre Edit: once again taken out of the cupboard. It simply remains one of the best ECS. Unfortunately, it was too expensive at the time. Very successful bottling. Proud age. Very fine notes in the taste
Review by Basti
Very inviting and relatively intense nose with a pleasant sweetness, lots of spices, dried fruit, coconut, gr.nuts, chocolate and caramel. The palate is also very intense and round with a pleasant sweetness. For me, one of the best FS bottlings! Surprisingly far behind in the blind tasting today. Form of the day?
Review by Tim
Similar to the 2008 and therefore just as phenomenal. Very complex and balanced. Of course all the typical FS aromas are there, whether the additional years in the bourbon cask have produced an even better rum compared to the 2008 is hard to say, but what's the point. Very good overall, especially the delicious pineapple/mint note on the nose.
Review by TheRhumhoe
A Foursquare that has taken the time of aging to refine its aromas. The nose is very versatile, sometimes fruity (exotic fruits, dried fruits, coconut, a hint of red fruits) sometimes greedy (chocolate, brown sugar, caramel, nuts), spicy (vanilla, pepper), we feel a note of glue that grows as the rum opens. Leather, tobacco and menthol also come through. A solid and engaging nose. The attack in mouth is rather direct. The profile is greedy, oriented towards rather dark notes (roasted and toasted notes, mocha, chocolate, nuts, sweet spices with cinnamon and licorice) that accompany burnt sugar, caramel, coconut and dried fruits. The alcohol is well integrated and the whole is very round, soft and fine. The finish, a bit short in terms of length, is focused on spices, wood, dried fruits and tobacco. The dark chocolate settles in progressively and develops a greedy note that leaves a very pleasant final impression on the palate. It is not a revolutionary Foursquare, but the profile more woody and darker than usual has the merit to make the distillery go out of the beaten tracks and to propose something more complex and a little less one-dimensional. A very nice bottling.
Review by Joachim Guger
Foursquare mid-range, very good in the house line. You don't have to run after it.
Review by Kevin Sorensen 🇩🇰
This sample has been on a long trip. All the way from Barbados actually and I just couldn't wait because I was told its really good. Right off the bat, yes, a great rum and I do hope I can get a bottle. The nose is nice and well rounded with wood, minty chocolate and dried fruit trailed by vanilla, tobacco and leather. The palate is complex and well balanced with oak and dried fruit trailed by chocolate, vanilla, caramel and tobacco. The finish is long, intense and well balanced between wood, chocolate and dried fruit. Try to leave the empty glass for a while and whiff it again :-)
Review by Frank
I can understand why Foursquare has so many fans. Especially when they are more mature, the Rums. Nose: beautifully fruity, sweet and sour fruit such as gooseberry, pineapple and passion fruit together with the typical coconut. Fine cocoa and a light aroma of apple cider vinegar. Oh, now a little mint is added, rounded off with candied fruit. Balanced and very pleasant. 8,6 Palate: spicy and woody, again with tart fruit, passion fruit. With bitter-sweet orange and lemon zest. Here, too, the fine taste of coconut. A little nutty on the finish before the tart fruit returns. Nice depth, a little too bitter, but overall a good drop. 8,4
Review by Mirco
Solide Abfüllung mit klarem Profil. Noten von Vanille, Karamell und dunklen Früchten treten deutlich hervor. Insgesamt gut balanciert mit angenehmer Tiefe, auch wenn er nicht überdurchschnittlich komplex wirkt. Ein Rum, der einfach gut funktioniert und Freude macht.
Review by Jarek
Tasted again at the Village 2024 in Nuremberg. Of the last ECS releases, up to the Covenant, I like it best. In contrast to the Covenant, which was too dry for me, the Isonomy has just the right amount of wood for me.
Review by crazyforgoodbooze
Completely different profile especially on the nose as usual with foursquare. Very much tropical fruit, including even kiwi and pineapple. Taste spicy, sour fruity and very intense. furry sour kiwi and pineapple, as well as orange peel meets dark chocolate and a touch of mint and black pepper. I like it very much and is really time something different compared to the otherwise quite manageable foursquare profile!
Review by LukaŽiga
8,7:On the nose, toasted oak with chocolate, leather, roasted nuts, vanilla, some black tea, tobacco, dried fruits like raisins and apricots, coconut, round, bump into our nosetrils. On aeration, caramel and baking spices are out, pineapple, banana, citrus and red fruits, flowery molasses. 8,8:On the palate, the attack is sweet, balanced, brown with toasted oak notes like caramel, roasted nuts, burnt sugar, pastry, biscuits, leather, later dark chocolate, spicy with vanilla, baking spices, slightly resinous, fruity with dried fruits like raisins and apricots, coconut, citrus fruits, some candied, round, as the molasses is earthy with tobacco. 8,7:The finish is long, dry and tannic, balanced, with minty, flowery molasses, earthy, toasted oak, spicy, dried figs, raisins and citrus fruits, coconut.
Review by Steffmaus🇩🇰
The oldest Foursquare ECS in 2023 (until the next one, slightly older is out). Very well rounded; a nose of dried fruits, and spices, with notes of chocolate, fresh fruits, leather and hints of oak. A powerful rum
Review by Christian Rudt
You pour the rum into the glass and already notice Foursquare. Vanilla, baking aromas, tropical fruit with a little coconut, the woody notes are all quickly present and extremely pleasant. Very smooth and finely distilled on the palate. The tropical fruits give a nice presence here but tend to swim along with spicy, woody impressions. Some citrus fruit now comes through and is also drawn into the nose. The finish is also very soft and balanced. Perhaps a little too much already, but it's simply great blended. The 17 years of tropical maturation are of course noticeable, so perhaps you're at the zenith of good taste, but who knows 🙂
Review by DomM
Very nice and rich FS profile.
Review by Piotr Ignasiak
Very nicely balanced, more wood and chocolate forward than Nobiliary. Aftertaste with some chocolate and mint.
Review by Henry Davies
Always fun to try the new ECS. It’s a nose with a lot of sweet notes, honey and kiwi fruit along with some more herbal mint and basil elements. The mouth has great balance, strong wood notes but is not over powering, leather, and chocolate orange. The finish is superbly balanced, with a long fade out on the tongue, intense gingerbread SBS citrus butter, and some. It’s top quartile for sure. Looking forward to trying head to head with Shibboleth.
Review by Portman
For me, it replaces Shibboleth and 2008 as the frontrunner in the series. The length of maturation has brought both more intensity and more balance. Wonderfully fruity, vanilla, deep dried fruit, sweetness, some barrel aroma. A stunner and worth the price in my opinion.
Review by Rare Akuma
Classic Foursquare profile on the nose, but the age seems to have added some interesting extras. The harsh caramelisation evolves into softer, nutty praline and pecan pie. Sweet tobacco on short breaths, mint on long breaths. Saffron neatly supports by adding some necessary herbaceousness, giving the rum extra edge it needs to really engage. On the palate you get the same fruitiness but with a passionfruit cameo. Wood, sweets and spice exactly the same as on the nose but clearly segmented and evolving in the mouth. First fruits, into caramel, into passionfruit, into spice, into chocolate. It’s quite peppery and hot, nearly spicy. The finish is very sweet and woody followed by light tobacco and cool mint.
Review by Fuwi
Fantastic ECS with an almost perfect balance. Very well matured, but not too dominant in the cask character, but also not too sweet but very warm and fruity, with great vanilla notes from the bourbon cask. In addition, dry, dark fruits that drift into chocolate and a wonderfully long, intense finish.
No reviews match this filter.
Expert reviews
2 critics scored it, averaging 9.6/10. Reviews from RumX's blog partners, independent experts who have tasted, evaluated, and described this rum..
Expert review by The Secret Rum Bar
Read full review →
Expert review by The Fat Rum Pirate
Read full review →It doesn't concern me as much as some I find. I can still enjoy 40% ABV sippers. This is one of the best ECS releases to date. Probably the best in the ex-bourbon only line up. If you can find a bottle then you won't be disappointed Happy hunting!
Details about Foursquare ECS XX Isonomy 2005
A Pot & Column Still Rum from Barbados, distilled by Foursquare, at 58%.
Community purchases
351 bottles logged by 227 collectors.
A collector's bottle.
13% opened, 24 emptied and repurchased.
What does Foursquare ECS XX Isonomy 2005 cost?
Community paid 112–200 €.
Current best price: 185.37 € – within the typical community range.
What members actually paid for their bottles. A typical range, not the current shop price. Full price & collection history in RX+ →
+9 purchases in the last 3 months.
Added to collections, last 12 months — dark bars are the last 3.
351 purchased · 142 tasted · 64 wishlist · as of
About the Foursquare distillery
The Foursquare distillery is located in Barbados. Rums from Foursquare have been reviewed 14,076 times with an average of 8.3/10.
To Foursquare →You may also enjoy
Rum enthusiasts who like this rum have also given the following rums high ratings:
Foursquare ECS XIX Sovereignty 2007
Foursquare ECS XIX Sovereignty 2007Sherried Foursquare, hot but rewards resting
Foursquare ECS XV Redoutable
Foursquare ECS XV RedoutableIntense, woody Foursquare with faint Madeira
Foursquare ECS XVI Shibboleth 2005
Foursquare ECS XVI Shibboleth 2005Dry, coconut-and-oak Foursquare for sipping
Foursquare ECS XVIII Indelible
Foursquare ECS XVIII IndelibleLight, balanced Foursquare that wants more punch
Foursquare ECS XVII 2009
Foursquare ECS XVII 2009Classic Foursquare: coconut, oak, cocoa, spice
Foursquare ECS XIII 2008
Foursquare ECS XIII 2008Dry, woody, coconut-vanilla Foursquare at full strength
Never miss a price drop.
Set a target price in the app, and we'll let you know as soon as the rum becomes available at that price from one of our partner stores. This works for any rum on your wish list.
Oliver · FounderBy rum lovers, for rum lovers
I'm Oliver, and RumX began in 2018 as a small passion project in Stuttgart, back then under the name Rum Tasting Notes.
What began as my digital tasting diary is now the world's most comprehensive platform for rum fans, today carried by a small team with Jakob, Lukas and Katharina, with Robert supporting us as a freelancer. We combine the collective intelligence of our community with an integrated marketplace, so you can choose with confidence, without paperwork, detours, or expert jargon.
Oliver, Stuttgart
About RumX →
