Hydrometer Tests

I test rums with a hydrometer and include the info in my rum reviews. The objective of this is not to be critical of any specific rum/brand, but to put information into the public domain regarding additives in rums to assist consumers in knowing what is added to their drinks and therefore whether or not the price tag of a bottle is justified. It is not a scientific test carried out in a laboratory nor does it definitively prove that additives in rums exist.

Although I reference “added sugar” it is rarely sugar that is actually the additive in rums. According to Foursquare Master Blender/Owner Richard Seale” “usually it’s sweet wines or concentrates which contain sugar. Sugar is just hard to hide.” Either way, something is present that should not be!

I followed Johnny Drejer’s guidelines, as stated on his Drecon web site.

UPDATED: June 17th 2022

From May 2022 onwards, I will be adding the dates of the hydrometer tests for reference.
The date is in UK format dd-mm-yy.

Brand/BottlerRumLabel ABVHydro ABVEst. SugarDate of Test
970 Rum Agricola Da Madeira15yo Cask Strength50.9%51%0-5g
970 Rum Agricola Da MadeiraMadeira Wine Cask Finish51.7%51-2%0-5g
970 Rum Agricola Da MadeiraSingle Cask Edition Cask 20 201752.8%53%0-5g
A1710Nuée Ardente44.7%45%0-5g
Ableforth’sRumbullion Spirit Drink42.6%30.8%43g
Ableforth’sRumbullion Navy Strength57%34%103g
AdelphiHampden 15yo54.3%54.3%0-5g
Admiral RodneyOfficer’s Release No.1 Port Finish45%45%0-5g
AlnwickGolden Spiced Rum40%33%26g
Antigua DistilleryVelier “Heavy” Rum66%66%0-5g
Appleton12yo “Rare Blend” Rum43%43%0-5g
AppletonEXCLUSIVE Rum43%43%0-5g
Appleton“Joy” 25yo45%45%0-5g
Appleton30 Year Old (2nd Edition)45%45%0-5g
AppletonMaster Blenders’ Legacy (MBL)43%43%0-5g
BacardiFacundo Eximo 10 Year Old40%37%12g
BacardiGran Reserva Limitada Rum40%40%0-5g
BBR18 Year Old Caroni Rum46%46%0-5g
BlackadderBarbados Foursquare 2004-10yo64.4%64%0-5g
Black TotFinest Caribbean46.2%46%0-5g
Cadenhead’sGMBV Bellevue Distillery 17yo54.3%54%0-5g
Cane & Bean187040%40%0-5g
Cane IslandBarbados40%40%0-5g
Cane IslandJamaica40%40%0-5g
Chairman’s ReserveLegacy43%43%0-5g
Chairman’s ReserveOriginal40%40%0–5g
Chairman’s ReserveWhite40%40%0-5g
Compagnie des IndesBarbados Multi Distilleries 20yo45%45%0-5g
Compagnie des IndesFoursquare 16yo45%45%0-5g
Compagnie des IndesHampden 15yo43%43%0-5g
Compagnie des IndesKaiman46%46%0-5g
Compagnie des IndesSt Lucia 13yo43%43%0-5g
Conde de Cuba15 Anos Rum38%38%0-5g
Domaine de Courcelles1972 (Rhumhouse Edition)54%54%0-5g
Don QFinished in Sherry Casks41%41%0-5g
Don QGran Añejo Rum40%40%0-5g
Don QSingle Barrel 200540%40%0-5g
Don QSweet Vermouth Cask “Finish”40%40%0-5g
El Dorado“Rare” Collection Enmore 199356.5%56.5%0-5g
El Dorado“Rare” Collection Port Mourant 199961.4%61.4%0-5g
El Dorado“Rare” Collection Versailles 200263%61%8g
El Dorado12yo40%30%35g
El Dorado15yo (Special Reserve)43%33.5%36.5g
El Dorado15yo MADEIRA DRY Finish43%40.5%10g 
El Dorado15yo MADEIRA SWEET Finish43%40.7%10g 
El Dorado15yo RUBY PORT Finish43%40.5%10g 
El Dorado15yo SAUTERNES Finish43%42%4g
El Dorado15yo WHITE PORT Finish43%40.6%10g 
El Dorado15yo RED WINE Finish43%41%8g
El Dorado21yo43%34.5%33g
El DoradoEHP (Single Barrel)40%40%0-5g
El DoradoICBU (Single Barrel)40%38%8g
El DoradoPM (Single Barrel)40%40%0-5g
El DoradoEnmore (Ruby Port) 2003 15yo62.1%59%17g
El DoradoEnmore (Sauternes) 2003 15yo62.3%58%22g
El DoradoEnmore 2006 12yo40%38%8g
English Spirit DistilleryOld Salt Rum42%41.5%0-5g
English Spirit DistillerySt. Piran’s42%42%0-5g
Fair11 Year Old Rum50.7%51%0-5g
Flor de Caña2540%40%0-5g
Foursquare1985 Distilled43%43%0-5g
FoursquareECS I 199840%40%0-5g
FoursquareECS III 200459%59%0-5g
FoursquareECS V Criterion56%56%0-5g
FoursquareECS VI 200559%59%0-5g
FoursquareECS VII Dominus56%56%0-5g
FoursquareECS VIII Premise46%46%0-5g
FoursquareECS XII Nobiliary62%62%0-5g
FoursquareECS XIII 200860%60%0-5g
FoursquareECS XIV Détente (Detente)51%51%0-5g
FoursquareECS XIX Sovereignty62%62%0-5g10-05-22
Foursquare2005 Milano Rum Festival57%57%0-5g
FoursquarePCS TWE Diadem60%60%0-5g
FoursquarePCS TWE Elysium60%48%0-5g09-06-22
FoursquarePCS V and B48%48%0-5g
FoursquareRum Sixty Six Cask Strength (Old Edition)59%59%0-5g
Hampden EstatePagos52%52%0-5g17-06-22
Havana Club15yo40%40%0-5g
Havana ClubEdicion A40%40%0-5g
Havana ClubEdicion B40%40%0-5g
Havana ClubSeleccion de Maestros45%45%0-5g
Kill DevilGuyana, Enmore 24 YO46%46%0-5g
Kill DevilHampden 16yo46%46%0-5g
KintraFoursquare 14Y57.7%57-8%0-5g
KintraWorthy Park 10y61.8%62%0-5g
La HechiceraBanana Infused Rum41%20%68g
La HechiceraMuscat Cask Finish43%43%0-5g
La HechiceraRum40%40%0-5g
LiverpoolLiverpool Rum43%41.9%4g
MezanTrinidad 200746%46%0-5g
MhobaSelect Agricole Aged 2 1/2yo43%43%0-5g
Mount Gay1703 (Original)43%43%0-5g
Mount GayBlack Barrel (Original)43%43%0-5g
Mount GayPeat Smoke Expression Rum57%57%0-5g
Mount GayXO Triple Cask (2020 Edition)43%43%0-5g
NeissonCuvée du 3ème Millenaire45%45%0-5g
NeissonProfil 10554.2%54%0-5g
Neptune Rum3yo40%40%0-5g
New Dawn TradersNew Dawn Rum42%40%8g
PlantationExtrême No. 2: Fiji Islands 16yo61.1%61%0-5g
PlantationExtrême No. 2: Guyana 18yo59.7%60%0-5g
PlantationFiji 200944.8%45%0-5g
PlantationGuatemala & Belize42%36%23g
PlantationHaiti XO41%37%16g
PlantationIsle of Fiji40%36%16g
PlantationJamaica & Guyana 19yo42%37%12g
PlantationM&S Jamaican Rum42%38.2%16g
PlantationPeru 200443.5%42.5%7g
PlantationXaymaca Special Dry Rum43%43%0-5g
Prichard’sPrivate Stock45%45%0-5g
Rhum DepazXO45%45%0-5g
Rhum JMArmagnac Finish41.5%41-2%0-5g
Ron AbueloCenturia40%34%22g
Ron AbueloXV: Cask Finish Oloroso Sherry40%27%44g
Ron AbueloXV: Cask Finish Tawny Port40%28.6%39.5g
Ron AbueloXV: Cask Finish Napoleon Cognac40%29.8%35g
Ron Barcelo30th Anniversary43%38%20g
Ron Centenario30th Anniversary40%24%53g
Ron CentenarioEdicion Limitada 3040%27%44g
Ron ColónSalvadoreño Rum55.5%55-56%0-5g
Ron Los ValientesAñejo Reserva Especial43%43%0-5g
Ron Zacapa2340%36.6%14g
Ron ZacapaXO40%34%22g
Ron ZacapaRoyal45%38%29g
Rum CaskHampden Estate Single Cask 17yo63.2%63%0-5g
Rum Diary BarSpiced Cherry44%34%39g
Rum Diary BarRoyal Fortune57%53.5%18.5g
Rum MaleconRare Proof 1851.7%46%25g
Rum MaleconRare Proof 2048.4%42%29g
Rum MaleconReserva Imperial 21 Years Old40%38%8g
Rum MaleconReserva Imperial 25 Years Old40%38%8g
St. Lucia Distilleries1931 First Edition43%43%0-5g
St. Lucia Distilleries1931 Second Edition43%43%0-5g
St. Lucia Distilleries1931 Third Edition43%39%16g
St. Lucia Distilleries1931 Fourth Edition43%43%0-5g
St. Lucia Distilleries1931 Fifth Edition46%46%0-5g
St. Lucia Distilleries1931 Sixth Edition46%46%0-5g
St. Lucia DistilleriesChairman’s Reserve White40%40%0-5g
Sang SomRum40%37%12g
Santa Teresa179640%40%0-5g
SBSBarbados 2008 Rum (Foursquare)55%55%0-5g
Seven FathomsRum40%40%0-5g
Sister IslesReserva Rhum40%37%12g
SMWSR1.4 “Gets the Juices Flowing”66.2%66.2%0-5g
SMWSR6.1 “Spice at the Races”57.3%57-8%0-5g
SMWSR6.2 “My Thai Spice in Bimshire”56.8%57%0-5g
SMWSR7.1 “Welcome to Jamrock”54%54%0-5g
SMWSR8.1: “A Tot In The Workshop”57.5%57.5%0-5g
SMWSR8.2: “The Hunt Master Before Lunch”57.5%57.5%0-5g
SMWSR8.3 “Fruit and Nut Case”55%55%0-5g
SMWSR8.4: “Campfire in Nicaragua”57.5%57.5%0-5g
SMWSR9.1: “Music For Rockers of Rum”61.8%60%10g
SMWSR9.2 “Paddington Bear’s First Sip”62%62%0-5g
SMWSR11.1: “Spicy Sweet Goodness”57.5%57.5%0-5g
SMWSR11.2 “Absolutely Fabulous”57.5%57.5%0-5g
Sparrow’sPremium Aged Rum40%40%0-5g
St. AbbsCaptain’s Table XO40%38%8g
St. AbbsWhite40%40%0-5g
St. Nicholas Abbey5yo40%40%0-5g
St. Nicholas Abbey5yo Cask Strength60%60%0-5g
St. Nicholas Abbey8yo40%40%0-5g
St. Nicholas Abbey10yo40%40%0-5g
St. Nicholas Abbey12yo40%40%0-5g03-06-22
St. Nicholas Abbey12yo Rare “Lost Barrel 10”40%40%0-5g03-06-22
St. Nicholas Abbey15yo40%40%0-5g
St. Nicholas Abbey18yo40%40%0-5g
St. Nicholas Abbey20yo40%40%0-5g
St. Nicholas Abbey23yo40%40%0-5g03-06-22
TanduayDouble Rum40%40%19g23-05-22
The DuchessMartinique 15yo61%61%0-5g
The DuchessBarbados 13yo (Foursquare)59%59%0-5g
UltimatumFoursquare Rum 3yo46%46%0-5g
VelierRoyal Navy Very Old Rum57.18%57-8%0-5g
Virgin Holiday SpiritRum40%40%0-5g
Whisky Broker16yo Rum at WIRD57.6%57-8%0-5g
William Hinton3yo40%36.4%0-5g
William HintonGold40%40%0-5g
William HintonLisbon Fortified Wine Cask42%42%0-5g
William HintonMadeira Cask Finish42%39.6%10g
William HintonMaldita Beer Cask42%42%0-5g
William HintonPortuguese Fortified Wine Cask Finish42%42%0-5g
William HintonWhisky Cask Finish42%42%0-5g
William HintonWhite40%40%0-5g
Worthy ParkSeries #2 Oloroso Cask Finish59%59%0-5g
Worthy ParkSeries #3 Sherry Cask57%57%0-5g
Worthy ParkSeries #4 Madeira Cask58%58%0-5g
Worthy ParkSeries #5 Port Cask56%56%0-5g
Worthy ParkSeries ??? Virgin Oak55%55%0-5g
Worthy ParkSingle Estate Reserve45%45%0-5g

I would also like to say thanks to Wes who originally suggested to me to get a hydrometer for testing rums, back in 2016.

Here are some links to other hydrometer tests:

Wes at FRP
Johnny at Drecon
Capn Jimbo

Rums with sugar

Rums with additives.

Rums with added sweet wines.

Sweetened rums.


hydrometer test