Aged in the north of The Netherlands

The Boilermaker Group is the brainchild of beer and cocktail combo – Peter Torenbosch and Lennart Deddens, and lifting spirits ever since 2017.


Building on their long standing experience and expertise in the drinks industry, creativity and love for the craft, The Boilermaker Group is not an ordinary hospitality company. Originating as a brand activation partner for premium spirit and beer brands, the company has grown in a full-service business with ventures in hospitality consultancy, event management, training and staffing and product development.

TBG develops, owns and operates distinctive drinks and food concepts

Which they do under various brands – true passion projects following the founders pioneering spirit.

Today, the portfolio includes award winning, high-end cocktail bar The Stockroom and jeu de boules-bar BOEL along with the culinary events: Wild Festival, Oktofest and the Cocktail & Craft Beer Festival and more is brewing. With its signature no-nonsense approach and high-quality service, each concept is set to raise the bar and create experiences that stick, connections that last and brings smiles ear to ear.


Lennart Deddens

The man with the magic fingers and spirited mind that does love a good classic cocktail. Lennart is no stranger in the Dutch bartender community. Named Best Bartender of the Netherlands in 2015 by Entree magazine and recognized as Bartender of the Year in 2016 by his fellow bartenders in the industry. It was in 2007, that Lennart got really hooked with the craft, when he found himself behind the bar of design hotel The Dominican in Brussels. After working several years for Groupe Yves Mattange, a well-known Michelin star chef in Belgium, it was time to come back home in 2013 and start a new adventure – the realisation of Mr. Mofongo, the forward-thinking cocktail bar and distillery in Groningen. It wasn’t until 2016 that Lennart followed his heart and took the leap. Together with longtime friend Peter Torenbosch, he set up shop and established Boilermaker. A business built on their shared love for good beers and spirits. The rest is history.


Peter Torenbosch

Peter is a true beer aficionado and guru. As certified beer sommelier he knows all ins and outs of beer and even launched his own beer brand in 2019: Torebrew Smoked Porter — not your average type of beer. Peter started working in hospitality at the age of fifteen and  it is safe to say that there is no one that better understands and lives service than Peter. Having organised over 200 events and counting, and having managed various reputable bars in the northern hemisphere, he is the mastermind behind our productions and the glue in between our operations. Peter is also the founding father of ‘Oktofest’ and ‘Wild Festival Groningen’. Projects close to his heart and breathing his passion for beer and craftsmanship.

Sales Manager

Nando Luttmer

Nando is a true go-getter. Fresh from university, a MSc in Interdisciplinary Business, also proved to be a master in the field. Through his internship at the Hooghoudt Distillery he got to know Peter and Lennart, which resulted in working as a bartender at TBG right from the beginning back in 2017. Nowadays Nando is responsible for the daily operations and sales of The Boilermaker Group and the right-hand man of Peter and Lennart. He’s always there – in the heart of the action!

Operations and sales

Gianinni Statia

Giannini is our man in Amsterdam, taking care of the day to day operations in the west. Starting in hospitality when he was 16, Giannini knows what this sector is all about. Finding his true passion in bartending by connecting with guests and experimenting with a wide range of ingredients. There’s no place Giannini feels more comfortable than at a bar, despite which side he’s on.


Finn Berg Moerkerk

Finn is the newest member of the ‘pack’ and a passionate operations man. Nothing satisfies him more than running events as smooth as possible, from festivals to catering parties. Right after his internship at The Boilermaker Group for his study Event Management, he was hired in a heartbeat. As it was very clear that he is a very welcome addition to the group. 

News and Awards

November 5, 2020

The Stockroom Groningen: cocktailbar wordt slijterij

Cocktailbar The Stockroom Groningen, dat vorig jaar open ging, heeft z'n geheime entree - een voormalig magazijn - omgetoverd tot een slijterij. Hier verkopen de ondernemers onder meer hun eigen, home made-producten.

March 3, 2020

Ryukyu 1429 cocktail competition

Ryukyu Awamori, a Japanese spirit still relatively unknown to many but didn’t hold any secrets for our talented Stockroom bartender Joe Churchill. His creativity and ingenuity earned him the victory in this new and challenging competition.

Ryukyu 1429 cocktail competition
January 20, 2020

Bobby's global cocktail competition

In 2020 the hard work of Erik Beeftink, co-owner of The Stockroom, in becoming a world class bartender paid off by winning Bobby’s National Cocktail Competition. His qualification ticket for the international finals which he also completely nailed with ‘Your Bobby’s Blazer’. A daring and surprising twist on a classic blue blazer that wowed the judges and granted his first, and definitely not last, win in an international cocktail competition.

Bobby's global cocktail competition
November 26, 2019

The Stockroom: een speakeasy bar in hartje Stad

Hij zit er wel, maar je ziet ‘m niet: The Stockroom. Een ‘speakeasy’-cocktailbar verstopt in de Oosterstraat en alleen toegankelijk via een geheime deur. Aan het roer staan Erik Beeftink en Lennart Deddens, die het bedenken en shaken van cocktails naar een hoger niveau brengen. Extra leuk: ze zijn verkozen tot beste nieuwe cocktailbar van Nederland en daarmee de winnaar van de Entree Awards 2019!

November 25, 2019

Best new cocktailbar 2019

The Stockroom, the first hospitality concept by The Boilermaker Group, was off to a flying start and that didn’t go unnoticed. The team was only a few months in business when The Stockroom was awarded The Best New Cocktail Bar of The Netherlands 2019 by Entree Magazine. Not only a huge honour, but even more so a confirmation that we were of the right track.

Best new cocktailbar 2019
August 17, 2019

Is The Stockroom in Groningen de beste nieuwe cocktailbar van Nederland?

Esquire's jury trok voor het achtste jaar op rij het land door in een zoektocht naar de beste nieuwe cocktailbar van ons land. De tweede bar op de route was The Stockroom in Groningen. Maar is deze cocktailbar in het hoge noorden ook de beste bar? Lees hier ons rapport.

June 18, 2019

Binnenkijken bij speakeasy cocktailbar The Stockroom in Groningen

Aan de buitenzijde is niets te zien - geen bord, geen naam, geen logo - maar achter een anonieme pui in de Groningse Oosterstraat zit sinds kort The Stockroom. Deze speakeasy cocktailbar zit verborgen in het magazijn van het naastgelegen restaurant Het Zusje van André Dokter. De duistere ruimte ademt de sfeer van de Amerikaanse jaren '20, de tijd van de drooglegging.

April 5, 2019

Eem noar: jeu-de-boules-bar BOEL

“Tussen de zakken grind, bouwmateriaal en werkers worden de contouren zichtbaar”, schreef ik dik een week geleden over BOEL. Maar er moest nog een hoop gebeuren, met als belangrijkste uitdaging: hoe wordt een oude garage van beton een sfeervolle jeu de boules-bar?

November 14, 2016

Gouden Strik Award

2016, The year Lennart was voted Best Bartender by his colleagues in the bar industry and brought home the prestigious Gouden Strik Award. Quite an honor!

November 30, 2015

Best Bartender

Following various second places in some of the most recognized national and international cocktail competitions, Lennart was (born) ready for one of his biggest achievements yet. After beating Tess Posthumus - by some regarded as the best female bartender in the world - in the final round of the Entree Awards, he ‘once and for all’ claimed the title Best Bartender of The Netherlands.

Best Bartender

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