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Château de Mirwart Food Identity independently reviewed
Food Identity How restaurants source, cook and care. Independently reviewed

Château de Mirwart

A castle restaurant and bistro in the Ardenne forest, where chef Jimmy Boniface cooks regional produce, forest garnishes and a separate vegan menu.

Allergies Not published, ask the kitchen ahead
Food Identity How restaurants source, cook and care. Independently reviewed

Château de Mirwart

A castle restaurant and bistro in the Ardenne forest, where chef Jimmy Boniface cooks regional produce, forest garnishes and a separate vegan menu.

The essentials, at a glance

Allergies Not published, ask the kitchen ahead

Documented practices
Independently
reviewed
Local sourcing
Seasonal cooking
Plant-forward menu
Health-intentional kitchen

Documented practices

Local sourcing Duck from Ferme de Flomont, dairy from Bertrix
Seasonal cooking Menu follows seasons; dishes named for themes
Plant-forward menu Separate vegan menu; three radishes from guide
Health-intentional kitchen Specific health practices named in at least one sub-area

Style
Fine dining
Brasserie
Cuisine
French
Good to know
Terrace
Garden
Private dining room
Recognised by
We're Smart Green Guide
Recognised by
We're Smart Green Guide·3 radishes

The delicious details

Château de Mirwart occupies a castle in the village of Mirwart, restored by its current owners and surrounded by Ardenne forest. Two kitchens share the building: L'Écrin de Mirwart, the gastronomic room, and the Bistrot de la Lomme.

Chef Jimmy Boniface builds both menus around the produce of the estate and the region. Duck comes from the Ferme de Flomont and dairy from La Bergerie d'Acremont in Bertrix, while garnishes are drawn from the forests around the château. Dishes take their names from their inspiration rather than their ingredients, and the carte follows the seasons.

A separate vegan menu runs alongside the regular one, and desserts are sweetened with honey from the château's own beehives rather than refined sugar.

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

The gastronomic room serves a five-course menu and the bistro offers two and three-course menus, both from the same kitchen and both built around Ardenne produce, game and foraged ingredients. A separate vegan menu runs alongside the regular carte. Desserts lean on natural sweetness and honey from the château's own beehives instead of refined sugar.

The gastronomic room serves a five course menu and the bistro offers two and three course menus of everyday dishes. Both come from the same kitchen, so both follow the Ardenne line: game, foraged ingredients and vegetables from the region.

Vegetables carry the composition on the vegetarian plates, and a separate vegan menu runs in parallel with the regular carte. That vegan menu holds three radishes from the We're Smart Green Guide.

Desserts lean on the natural sweetness of their ingredients and on honey from the château's own beehives, in place of refined sugar.

Cuisine

French

Dietary options

Vegetarian options
Vegan-friendly

Health-intentional kitchen

Specific health practices named in at least one sub-area
Researched

Desserts rely on the natural sweetness of carefully selected ingredients and honey harvested from the château's own beehives instead of refined sugar, meeting the level 3 threshold for at least one named health-intentional practice.

Impact score
How this restaurant rates
2 - Engaged

Three areas of responsible cooking are confirmed at Château de Mirwart, earning two planets.

Local and direct sourcing is the first: duck comes from the Ferme de Flomont, dairy from La Bergerie d'Acremont at Bertrix in the same province, and garnishes are gathered in the forests around the estate, with honey from the château's own beehives. Seasonal cooking is the second: the carte follows the seasons, and the chef describes his cooking as moving to the rhythm of nature and the seasons. The plant side of the menu is the third, with vegetables leading the vegetarian plates and a full vegan menu alongside the regular one.

The We're Smart Green Guide lists the restaurant and has awarded three radishes to that vegan menu.

The impact dimensions

Local & direct sourcing

Seasonal cooking

Sustainable animal products

Plant-forward menu✓

Duck comes from the Ferme de Flomont and dairy from La Bergerie d'Acremont in Bertrix, with garnishes gathered in the forests around the estate.

The restaurant's own pages state that the cooking uses 'fresh, local ingredients' drawn from the surrounding estate. A third-party restaurant platform listing names producers: duck from the Ferme de Flomont, dairy from La Bergerie d'Acremont at Bertrix in the same province, and garnishes gathered in the forests around the château, with honey from the château's own beehives.

A restaurant guide listing independently describes the kitchen as working on territory-driven preparations from the Ardenne, with game, foraged ingredients and forest-adjacent produce. Together this meets the level 3 bar of at least one named, traceable local supplier with partial local coverage across categories.

Strongest sourceThird-party restaurant platform ↗

The carte follows the seasons, with dishes named for seasonal themes and the chef describing his cooking as moving to the rhythm of nature and the seasons.

The restaurant's own pages state that 'fresh, seasonal ingredients are prepared using the most refined techniques'. A third-party platform listing quotes the chef directly: 'Chaque instant m'inspire, au rythme de la nature et des saisons' and records courses named for seasonal themes including 'Âme d'Été' and 'Entre Champs et Forêt'.

A restaurant guide listing describes the kitchen as working on seasonal, territory-driven preparations and notes that availability tracks the season. This supports level 3: the menu changes with the season and individual dishes are clearly built around seasonal produce.

Strongest sourceThird-party restaurant platform ↗

Duck and dairy are named from local producers; Japanese A4 Wagyu and unspecified fish species cap the sourcing evidence at level 2.

A third-party restaurant platform listing names duck from the Ferme de Flomont and La Bergerie d'Acremont, a dairy sheep farm at Bertrix in the same province, among the producer partners. A guide listing records Ardenne game on the menu. That is concrete enough to narrow the sourcing picture, but no welfare label, organic certification or fishery certification is named for any category.

The same platform listing records Japanese A4 Wagyu as a menu item, an air-freighted luxury import with no welfare qualification, which caps the dimension at level 2 under the rubric's rules for high-impact commodities. Red mullet is named as a signature and sole appears on the carte, but no fishmonger, species policy or catch method is named.

Strongest sourceThird-party restaurant platform ↗

A separate vegan menu runs alongside the regular menu, with vegetables leading vegetarian plates and three radishes from the We're Smart Green Guide.

The We're Smart Green Guide records that the chef offers 'a high-end plant food menu' and works with 'regional produce and lots of vegetables in the main'. The restaurant's own pages confirm a separate vegan menu and state that it holds three radishes from the We're Smart Green Guide, and that on vegetarian dishes vegetables become the central element of the composition.

This matches level 3: a meaningful plant presence with vegan options available and plant-forward intent acknowledged, on a carte where animal proteins remain at least as prominent as vegetables. Signature dishes include red mullet, Japanese A4 Wagyu, aged beef and Ardenne game, so vegetables are not the structural foundation of most dishes.

Strongest sourceWe're Smart Green Guide

Sourcing signals

✓
Own-grown produce
✓
Direct named-farm sourcing

Honey from the château's own beehives replaces refined sugar across the dessert course, and garnishes are gathered in the forests of the surrounding estate.

Duck from the Ferme de Flomont and dairy from La Bergerie d'Acremont at Bertrix in the same province are named producer partners; La Bergerie d'Acremont is a documented dairy sheep farm.

Visit & practical info
Address, price, and more
Address
Rue du Château 29, Saint-Hubert, Belgium
Open in Google Maps ↗
Price
€€€€
Format
Five-course menu in the gastronomic room; two or three courses in the bistro. Separate vegan menu available.
Style
Fine dining
Brasserie
Good to know
Terrace
Garden
Private dining room
Web
chateaudemirwart.com
Reviewed by My Treats
Last reviewed 07 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
—
How this dimension works
—
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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