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Harlingen · Netherlands

't Havenmantsje

A modern Frisian-French dining room set in Harlingen's 1884 courthouse, where Wadden Sea ingredients drive surprise menus from a master chef.

The essentials, at a glance

◐
Impact score
3 - Endorsed
→
Documented practices
Local sourcing
Seasonal cooking
Social impact
Plant-forward menu

Style
Fine dining
Cuisine
Dutch
French
Seafood
Good to know
Private dining room
Recognised by
We're Smart Green Guide·2 radishes Dutch Cuisine·Charter signed

The delicious details

Restaurant 't Havenmantsje occupies an 1884 former courthouse on Harlingen's harbour, with a glazed conservatory looking out over the water and the Wadden Sea.

SVH master chef Marco Poldervaart runs the kitchen alongside his wife Inez, who hosts and chooses the wines, with their two children also working in the business. The format is the surprise menu, from three to six courses, with a ten-course chef's table held in the cooking studio on the first floor.

Pacing is unhurried: a single table belongs to its guests for the evening, and the kitchen draws its ingredients from the Wadden Sea and the fertile land behind the Waddendijk.

Menu
What's on the table, and what's left off

Surprise menus of three to six courses, rotating with Wadden Sea seafood and regional produce. Lunch from €39.50, dinner from €54.50, or a ten-course chef's table in the kitchen studio at €130. Dietary preferences accommodated at booking.

Cuisine
Dutch
French
Seafood
Dietary options
Vegetarian options
Allergies handling
Notice At booking

Notify the restaurant at booking; the kitchen accommodates dietary preferences, allergies and intolerances on a per-booking basis. Vegetarian and vegan menus are available. Gluten-free options are offered on request.

Impact score
How this restaurant rates
3 - Endorsed

Local and direct sourcing is anchored in the Wadden Sea, the salt marshes, and the farmland behind the Waddendijk: cockles, mussels, razor clams and oysters from the mudflats, vegetables and potatoes from regional growers, and wines from Frysling vineyard in Twijzel. Seasonal cooking is structural: the surprise-menu format rotates with what the sea and the surrounding fields offer at any given time.

Social impact is the clearest signal: 't Havenmantsje was named SVH Best Hospitality Training Company for 2019 to 2020, offers sixteen apprentice positions across levels two to four, and the chef gives guest lessons at nearby hospitality schools.

Chef Marco Poldervaart is a Dutch Cuisine ambassador, the national charter promoting regional Dutch ingredients and culinary heritage.

The impact dimensions
Local & direct sourcing✓
Seasonal cooking✓
Sustainable animal products
Social impact✓
Plant-forward menu✓

Named suppliers including Frysling vineyard in Twijzel and Wadden Sea shellfish; potatoes and vegetables from farmland behind the Waddendijk.

Sourcing is positioned as a kitchen value in the restaurant's own copy and corroborated by independent regional editorial coverage. Visit Wadden names Frysling vineyard in Twijzel (Douwe and Jantien Broersma) as a direct wine supplier.

The Dutch Cuisine ambassador listing confirms a documented commitment to regional Dutch products. Cockles, mussels, razor clams and oysters from the Wadden mudflats and potatoes and vegetables from farmland behind the Waddendijk are named across multiple sources.

Strongest sourceVisit Wadden ↗

Surprise menu format rotates with Wadden Sea and regional produce availability.

The restaurant's own menu pages state that the kitchen works with fresh, seasonal ingredients, and the format is a surprise menu by design, rotating with what is available. The Dutch Cuisine ambassador profile and the Visit Wadden article both describe a kitchen organised around the seasonal availability of sea and marshland produce.

Strongest sourceDutch Cuisine ↗

Menu features Wadden Sea shellfish and regional veal from behind the Waddendijk.

The menu lists veal ribeye, steak tartare, sea bass, and Wadden shellfish: cockles, mussels, razor clams and oysters. Regional origin is supported by reference to the Wadden Sea and the Waddendijk farmland.

Strongest sourcehavenmantsje.nl ↗

SVH Best Hospitality Training Company 2019–2020; sixteen apprentice positions; guest lessons at hospitality schools and first-floor cooking studio.

The restaurant won the SVH Beste Leerbedrijf Horeca national award, recognised by SVH on its public news page and in trade press. The SBB stagemarkt registry lists 16 apprentice positions across levels two to four, covering host, cook, specialised cook, supervisor and management qualifications.

Chef Marco Poldervaart gives guest lessons at nearby hospitality schools and runs cooking workshops and demonstrations from the restaurant's first-floor cooking studio. A multi-generation family business: Marco and Inez Poldervaart with their two children Denise and Pascal.

Strongest sourcesvh.nl ↗

We're Smart Green Guide 2-radish rating; menus can be made entirely vegan; roasted fennel with apple jus is a recurring vegetable dish.

We're Smart Green Guide lists 't Havenmantsje with a 2-radish rating, a partner-vouched assessment that specifically evaluates kitchens on their vegetable-forward cooking. The guide's profile notes chef Marco Poldervaart's emphasis on regional vegetables and products as part of his Dutch Cuisine ambassadorship.

HappyCow describes the restaurant as offering lunch and dinner menus that can be made entirely vegan, with one reviewer describing the experience as 'vegan haute cuisine'. Vegetarian dishes are confirmed on the regular surprise menu, including roasted fennel with apple jus. The core menu structure remains founded on Wadden Sea seafood and regional meat.

Strongest sourceWe're Smart Green Guide ↗
Sourcing signals
✓
Direct named-farm sourcing
✓
In-house preparation

Frysling vineyard in Twijzel (Douwe and Jantien Broersma) named as a direct producer relationship by the Visit Wadden editorial profile, supplying wines including the 'Brûswyn' sparkling. Wadden Sea shellfish are referenced as direct from the mudflats.

Restaurant produces its own 'Wad'n Gin Waddenzee' branded gin from local botanicals, and the menu page lists in-house pastries served with the coffee programme.

Visit & practical info
Address, price, and more
Address
Havenplein 1, 8861 XA Harlingen, Harlingen, Netherlands
Open in Google Maps ↗
Price
€€€
Format
Surprise menu, reserve your party.
Hours
Monday12:00–21:00
TuesdayClosed
Wednesday12:00–21:00
Thursday12:00–21:00
Friday12:00–21:00
Saturday12:00–21:00
Sunday12:00–21:00
Style
Fine dining
Good to know
Private dining room
Web
havenmantsje.nl
Reviewed by My Treats
Last reviewed 11 May 2026
Reserve
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How we score
The My Treats impact scale

Every restaurant is assessed against SEERO, our six-dimension sustainability framework — covering sourcing, seasonality, waste, animal products, social impact, and plant-forward cooking. Each finding is weighted by how strongly it is corroborated. The combined result is translated into a planet rating from 1 to 5.

The five levels

SEERO is an acronym for Starting, Engaged, Endorsed, Recognised, Outstanding:

Starting First verified signals of sustainable practice.
Engaged Credible practice across two dimensions.
Endorsed Meaningful practice across three or more dimensions.
This place
Recognised Strong practice across four or more dimensions, with independent corroboration.
Outstanding Top-tier practice, confirmed by recognised third-party audit.

How a level is reached. Each level needs two things together: a minimum number of dimensions covered, and a minimum overall strength of evidence across them. A dimension only counts once its evidence is specific and substantiated — a passing mention doesn't qualify. Meeting only one of the two keeps a restaurant a level lower.

Ratings of four or five planets require human validation and, at the top tier, an external audit. Scores are based on publicly available evidence and restaurant submissions at the time of assessment.

Full methodology→
Impact dimension
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How this dimension works
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How evidence is weighted
Self-declared Stated by the restaurant on its website, menu or in a submission. Plausible, but not yet independently corroborated.
Researched Found through independent research; one credible third-party source backs the claim.
Vouched Corroborated across more than one independent source. Some gaps may remain.
Audited Fully corroborated across independent sources or by a recognised third-party certification.
What the sourcing checkmarks mean
✓ Full check — independently verified: corroborated across more than one source, or audited / third-party certified (vouched or audited).
✓ Light check — self-declared or from a single source. Not yet independently verified.
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