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Nuance Food Identity independently reviewed
Food Identity How restaurants source, cook and care. Independently reviewed

Nuance

A husband and wife fine dining room in Duffel where chef Thierry Theys builds tasting menus around North Sea shellfish, game and vegetables, with the acidic edge that runs through his cooking.

Allergies Not published, ask the kitchen ahead

Food Identity How restaurants source, cook and care. Independently reviewed

Nuance

A husband and wife fine dining room in Duffel where chef Thierry Theys builds tasting menus around North Sea shellfish, game and vegetables, with the acidic edge that runs through his cooking.

The essentials, at a glance

Allergies Not published, ask the kitchen ahead

Documented practices
Independently
reviewed
Seasonal cooking

Documented practices

Seasonal cooking Menu rewrites seasonally, spring to autumn

Style
Fine dining
Cuisine
French
Recognised by
We're Smart Green Guide
Recognised by
We're Smart Green Guide

The delicious details

Thierry Theys opened Nuance in Duffel in 2008 with his wife Sofie Willemarck, who runs the dining room. The kitchen works a Flemish register with influences drawn from further afield, and sets out to pull the clearest possible flavour from each ingredient.

Courses are named for what is on the plate: North Sea crab with courgette and green cardamom, John Dory with fennel and saffron, roe deer with apricot and aged aceto. The carte follows the seasons and is rewritten as they turn, so an autumn menu shares little with a spring one.

Service runs to four courses at lunch and five or seven in the evening, with a shorter signature selection of the dishes most closely tied to the house. The dining room was rebuilt in 2020, and much of it is filled by regulars from the surrounding streets.

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

The menu is a tasting format: four courses at lunch, five or seven in the evening, plus a shorter signature selection. Dishes are named for their main ingredients and built from whole ingredients in the kitchen. Two desserts close each menu, with cheese available.

The format is a tasting menu: four courses at lunch, five or seven in the evening, plus a shorter signature selection.

Dishes are listed by their ingredients rather than their technique, so a course reads as North Sea crab with courgette and green cardamom, or Wagyu with green pepper and caper leaf. Structures and textures are worked up in the kitchen from whole ingredients, and two desserts close the menu, with a cheese board available in place of one or as an addition.

Cuisine

French
Impact score
How this restaurant rates
2 - Engaged

Seasonality runs through the kitchen. Thierry Theys states that his cooking is guided by the seasons, and the published menus bear that out: asparagus from the Lier fields in spring, game and autumn fruit once the weather turns, with the carte rewritten rather than adjusted as each season arrives.

Nuance is listed in the We're Smart Green Guide, the international guide to vegetable led kitchens, which credits the flavour accents and layering the kitchen draws from its vegetables.

The impact dimensions

Local & direct sourcing

Seasonal cooking✓

Low waste & circular practices✓

Sustainable animal products

Plant-forward menu✓

Local sourcing is stated as a kitchen value with Lier asparagus and North Sea crab named, but no traceable suppliers identified.

The restaurant's about page states that local ingredients and local suppliers are values of the kitchen, without naming any specific producer. Lier asparagus appears in the Gault&Millau review and North Sea crab is named on the menu, but neither is tied to a named farmer or fishmonger.

The current carte also features Wagyu A5 from Kagoshima and Manjimup truffle, suggesting a sourcing philosophy that mixes regional products with luxury goods from further afield. Local sourcing is positioned as a kitchen value rather than a verifiable, documented practice.

Strongest sourceRestaurant submission

The menu rewrites seasonally across spring, summer and autumn; a Gault&Millau review independently documents this rotation.

Thierry Theys states that his cooking is guided by the seasons, and this is corroborated independently. A spring menu in the Gault&Millau review featured Lier asparagus, turbot and langoustine with strawberry and caramelised pineapple. The current autumn carte is built on roe deer, John Dory and peach.

The menu is rewritten rather than adjusted as seasons change, producing markedly different cartes across the year. This is a regular, deliberate rotation tied to produce availability, not a superficial seasonal adjustment.

Strongest sourcegaultmillau.be ↗

A house beer commissioned for the restaurant's fifteenth anniversary is served in glasses made from 90 percent recycled material.

For the restaurant's fifteenth anniversary, the house commissioned a beer described as ecologically responsible, served in a glass made from 90 percent recycled material. This is a specific, documented element within the packaging sub-area.

No kitchen composting partner, food waste programme, plastic policy, energy measure or preservation or fermentation practice for waste reduction is named on any channel. The practice evident is a single initiative within beverage packaging.

Strongest sourcebo-magazine.be ↗

The menu names North Sea crab, Wagyu A5 and wild game with regional origins, but no verifiable supplier, welfare certification or audit is documented.

The menu names North Sea crab as an origin signal, and current proteins include Wagyu A5 from Kagoshima, John Dory, roe deer, langoustine and Gobetto prawn. These species and origins are stated but no verifiable supplier, butcher or fishmonger is identified.

No welfare certification (MSC for fish, ASC, organic, or equivalent) is held or cited. The sourcing is presented as a quality claim, that the kitchen uses the best ingredients it can buy, rather than a verifiable welfare or sustainability standard.

Strongest sourceRestaurant submission

The We're Smart Green Guide recognises the chef's vegetable technique; the menu itself is structured around animal proteins with vegetables in supporting roles.

The restaurant holds a listing in the We're Smart Green Guide, the international guide to vegetable-led kitchens. The guide credits the chef's vegetable technique and describes flavour accents and layering built from vegetables, citing dishes like langoustine with beetroot and sumac and cod with avocado, jalapeno and coconut milk.

On the current published carte, every course is named for an animal protein, with vegetables in a supporting position: crab with courgette, prawn with tomato and aubergine, John Dory with fennel, Wagyu with green pepper and caper leaf. No vegetarian or plant-forward menu option is published.

Strongest sourceWe're Smart Green Guide ↗
Visit & practical info
Address, price, and more
Address
Kiliaanstraat 6-8, Duffel, Belgium
Open in Google Maps ↗
Price
€€€€
Format
Tasting menu: four, five or seven courses
Hours
MondayClosed
Tuesday19:00–21:00
Wednesday12:00–14:00, 19:00–21:00
Thursday12:00–14:00, 19:00–21:00
Friday12:00–14:00, 19:00–21:00
Saturday19:00–21:00
SundayClosed
Style
Fine dining
Web
resto-nuance.be
Reviewed by My Treats
Last reviewed 15 Oct 2026
Reserve To website
Link copied
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 an impact score 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.
This place
Endorsed Meaningful practice across three or more dimensions.
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.

Scores of four or five 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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