Cocktail Bar & Rum Bar
in Brussels
About Us
Cocktail Bar Hospitality.
The Modern Alchemist is born from the never-ending quality research of 3 passionate bartenders.
We became friends more than 10 years ago, working and learning our craft behind the same bar in Brussels. We then went our separate ways in renowned cocktail bars. After a couple of years, the same mindset regarding the service industry and the urge to create our own place brought us back together. Nevertheless, striving to deliver the best experience possible took us 3 more years to refine and shape the concept.
The result is a craft cocktail bar in Brussels, with quality service, a cozy atmosphere, comfortable seatings, and drinks made with love. Mainly focused on cocktails and rums, we only use the highest quality spirits and organic fresh ingredients on our seasonal menus.
We are always looking for new products and techniques; we are constantly trying to improve our skills and enhance the quality of time you spend with us in our cocktail bar!

Our Offer
Perfect drinks for everyone, everywhere, at any time.
Our main activity is tending our cocktail bar in the heart of St-Gilles, Brussels, where we use the finest and, wherever possible, local, fresh and seasonal products. But The Modern Alchemist has also an online shop! On our webshop you will find high-quality and authentic spirits choosen by our team.
As rum lovers, we mainly focus on this incredible spirit and even make our very own co-bottling. Still, we offer a wide range of other liquors such as Whiskies, Mezcals, and many more. Sellings spirits that we love weren’t enough, therefore we create a range of ready-to-drink bottled cocktails to enjoy a perfectly crafted drink, like in our bar, but in the coziness of your home.
We provide you pro and consumers Masterclass. We think spirits education is essential, as well as industry-related consulting for hospitality businesses who want to grow.(more info coming soon!)

Homemade ingredients

Seasonal Products

Artisanal Small Bites

Craft Bottled Cocktails

Large choice of Premium Spirits

Online Liquor Store

Private & Business Event

Consulting / B2B / Masterclass
Our Menu
Signature Cocktails – Seasonal Menu
A subtle floral touch enhances a fine combination of herbal notes and a hint of spices.Geniver eau de vie from Constant Berger, Dry Vermouth Ferdinand, Calendula. – 24.5%
14€Delicate and elegant, sour and fruity with floral notes Plum Eau de Vie from Constant Berger, Sherry Blend, Yellow Chartreuse, Verjuice, Violet – 23%
14€Why eat a salad when you can drink a tastier and funnier version.. with booze?! Beetroot & Cumin seed infused Mezcal, Dill Aquavit, Pères Chartreux Walnut liqueur, Verjuice, Goat Cheese espuma – 23,5%
14€A fruity cocktail combining the sweet scent of lavender and the freshness of hibiscus. Massenez Williams Pear Eau de Vie, Ferrand Pineau des Charentes, Hibiscus and Lavander soda – 9%
14€Spicy exotic flavours combined with citrus. Plantation Original Dark Rum, Plantation OFTD Rum, Yuzushu, Ferrand Dry Curacao, Rice orgeat, Wasabi, Lime. – 27%
14€Gourmand, fresh and sour, with hints of citrus and roast cacao. Rhumantic Pear & Cacao Rum, Christian Drouin Calvados, Almond Grappa, Kumquat – 24,5%
14€The unexpected blend of wine, herbal and chili flavours into a sweet and sour sparkling long drink. Cantillon St-Lamvinus Gueuze, Ancho Reyes Verde chili liqueur, Raspberry Eau de Vie, Longueteau Rhum, Thyme, CO2. – 13%
14€Powerfull and intense, inspired by a great classic, the Last Word, but in a wintry way. Very Strong. Maker’s Mark Bourbon, Green Chartreuse, Peppers and Orange peels infused Verjuice – 34%
14€Classic & Twist
Our now-classic Rum Old Fashioned with our secret house blend of Rum
Blend of Rum, Demerara Syrup, Orange Bitter – ~35%
This classic sour & refreshing rum cocktail is a staff favorite.
Rum, Lime, Simple Syrup – 25%
The name says it all, here’s a big and strong cocktail!
House Blend of 3 Rums, Falernum, Grapefruit, Pomegranate, Lime. 26%
A classic long drink, refreshing & gingery
Rum Blend, Lime, Ginger Beer 12%
Cantillon Beer
Blend of 2 years old Lambic with 9 differents varieties of grape pomace – 6.5%
35€One payment by card per table, thanks.
Some of our cocktails are available in bottles (50cl) for takeaway. Ask the staff for prices and availabilities!
At The Modern Alchemist, we use mostly organic and local ingredients to make our cocktails. We are working with local market & artisan like Hopla Geiss, La Fruitière, Super Monkey, L’herboristerie de Louise, etc.
Food
Whole unpittet olives.
4€Chorizo flamed with Jamaican Rum & spicy Bitters.
9€Organic canned Mackerel in olive oil, served with sourdough bread. Contain FISH, GLUTEN.
9€Unpasterized cow’s milk cheese from France. Contain MILK, MUSTARD.
9€Italian buttery veined blue cheese from unskimmed cow’s milk. Served with sourdough bread. Contain MILK, GLUTEN.
6€Depending of the staff’ inspiration. Ask for more information.
8€Soft Drink
At The Modern Alchemist, we are using mostly organic and local ingredients to make our cocktails. We are working with local market & artisan like Hopla Geiss, La Fruitière, Super Monkey, L’herboristerie de Louise, etc.
Our Featured Rums – 4cl
(i) = Click here to see more information about the rum.
Rum Collector of the month – price/cl
This traditional rum made in Guyana is a blend of two iconic still, directly in the barrel before aging. It comes from the Rare Collection of El Dorado; this <ICBU>GS/20<EHP> mark is bottled at cask strength at 47.4%. Distilled in 2008 and aged for 11 years, this rum is smooth and delicate, with notes of toast oak, sweet spices(vanilla), molasses, and nuts.
Whisky (4cl)
We also have a wide range of whisky bottles for sale; check our webshop for availability & prices.
Where to find us?
The Modern Alchemist
Cocktail Bar in Brussels
Opening Hours
CLOSED on 25/03/2023
Tue. – Thu.: 6 pm to 12 am
Fri. – Sat.: 6 pm to 1 am
Any questions?
Contact us!
We don’t take reservations.