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Negen Straatjes · Amsterdam · Netherlands

Jansz.

Modern Dutch all day restaurant in Amsterdam's Nine Streets, centred on local Dutch produce and North Sea fish in an elegant canal house setting.

The essentials, at a glance

◐
Impact score
3 - Endorsed
→
Documented practices
Local sourcing
Seasonal cooking
Sustainable meat/fish

Style
Trendy
Cuisine
Dutch
Good to know
Terrace
Private dining room
Child-friendly
Children's menu

The delicious details

Jansz. sits within a row of 17th century canal houses at the Pulitzer Hotel, on Amsterdam's Reestraat in the Negen Straatjes. The kitchen, led by Arnout van der Kolk, is built on a single idea: working with what grows and is caught in the Netherlands. Heritage beets, polder chicken, North Sea fish and Dutch beef form the backbone of the menu. Van der Kolk, who trained at Ciel Bleu and Restaurant C, brings a repertoire that shifts with the seasons and leans towards fish and vegetables.

The dining room is elegant but unfussy, with a canal side terrace in warmer months and private dining in the hotel's original Copper Rooms. Family Sundays, held on the last Sunday of each month, include a dedicated children's menu and a supervised playroom.

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

Lunch and dinner menus change with the Dutch growing calendar. The chef's three-course menu at dinner provides a structured route, while the full carte ranges from Dutch shrimp croquettes and yellowtail crudo to North Sea seabass and Dover sole meunière. Vegetarian options include ricotta ravioli and roasted broccolini, with a handful of vegan starters such as eggplant dip. Named suppliers include Holtkamp (croquettes), Lindenhoff (butter), Kaasfort Amsterdam and Reypenaer (cheeses).

Cuisine
Dutch
Dietary options
Vegetarian options
Impact score
How this restaurant rates
3 - Endorsed

The kitchen sources from named Dutch producers: Holtkamp (croquettes), Lindenhoff (butter), Kaasfort Amsterdam and Reypenaer (cheeses) and Kesbeke (pickles) feature on the menu, with North Sea fish and polder chicken as recurring staples. The menu changes with the Dutch growing calendar, with specific dishes tied to seasonal availability. Chef Arnout van der Kolk serves as an ambassador of North Sea Chefs, an organisation that promotes responsible fishing from the North Sea and the use of lesser-known bycatch species.

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

The menu names five Dutch suppliers across multiple categories: Holtkamp (croquettes), Lindenhoff (butter), Kaasfort Amsterdam (cheeses), Reypenaer (cheese) and Kesbeke (pickles).

The kitchen positions Dutch produce as its foundation, with North Sea fish and polder chicken named as menu staples. The chef states the kitchen uses local ingredients as much as possible.

The sourcing claims are primarily self-declared via the restaurant's own menu and website. The chef's North Sea Chefs ambassadorship provides independent corroboration for fish sourcing specifically.

Strongest sourcepulitzeramsterdam.com ↗

The menu changes seasonally with summer-specific dishes such as beet with herring and green asparagus.

Multiple sources confirm that the menu changes seasonally. The chef describes seasonal cooking as central to his approach, and editorial sources corroborate this commitment.

The restaurant operates a seasonal Rose Garden pop-up in summer, with dishes built around seasonal produce availability.

Strongest sourcelittlewanderbook.com ↗

The chef is an ambassador of North Sea Chefs, an organisation promoting responsible fishing and valorising bycatch species.

The chef has been an ambassador of North Sea Chefs since 2019, an organisation promoting balanced fishing from the North Sea and valorising bycatch species.

North Sea fish features prominently on the menu, including seabass, salmon, Dover sole, shrimp and yellowtail.

Strongest sourcenorthseachefs.be ↗

Family Sundays with supervised childcare are held on the last Sunday of each month.

The parent hotel (Pulitzer Amsterdam) operates several social programmes including a Made Blue partnership and OpenUp employee wellbeing support. The restaurant participates in Family Sundays with supervised childcare, held on the last Sunday of each month.

Strongest sourcepulitzeramsterdam.com ↗

The dinner menu offers approximately 25 per cent vegetarian mains alongside several vegetarian starters and one vegan starter.

The dinner menu offers two vegetarian mains (roasted broccolini, ricotta ravioli) out of eight total mains, approximately 25 per cent. Lunch offers one vegetarian main out of four, with several vegetarian starters available (tomato salad, spring salad, celeriac) and one vegan starter (eggplant dip).

The menu is structured around animal proteins as centrepiece dishes. Vegetables function as alternatives rather than as the foundation of the menu.

Strongest sourcepulitzeramsterdam.com ↗
Visit & practical info
Address, price, and more
Address
Reestraat 8, 1016DN Amsterdam, Amsterdam, Netherlands
Open in Google Maps ↗
Price
€€€
Format
Lunch and dinner à la carte and chef's tasting menus; private dining available
Hours
Monday12:00–22:00
Tuesday12:00–22:00
Wednesday12:00–22:00
Thursday12:00–22:00
Friday12:00–22:00
Saturday12:00–22:00
Sunday12:00–22:00
Style
Trendy
Good to know
Terrace
Private dining room
Child-friendly
Children's menu
Web
janszamsterdam.com
Reviewed by My Treats
Last reviewed 27 Apr 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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