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Jonathan's Food Identity independently researched
Food Identity independently researched Researched

Jonathan's

Vegan contemporary fine dining in a medieval monastery of 1100.

The essentials, at a glance

Documented practices
Independently
researched
Local sourcing
Seasonal cooking
Low waste
Sustainable meat/fish plant-based kitchen
Social impact
Plant-forward menu
Health-intentional kitchen

Style
Fine dining
Cosy
Trendy
Cuisine
Fusion
International
Good to know
Terrace (reservable)
Garden
Bar
Children's menu
Recognised by
We're Smart Green Guide·4 radishes

The delicious details

Jonathan's occupies the stone-walled rooms of a 12th-century monastery in Certaldo Alto, the medieval hilltop quarter of this Tuscan town. Chef Jonathan and Erik Regini run both the kitchen and the adjoining bed and breakfast, a family business with just eight to ten seats and a fully plant-based tasting menu that changes monthly.

The kitchen is contemporary and globally influenced, drawing on flavours from across culinary traditions, from Sichuan pepper and tamarind to Arab-influenced preparations alongside fresh pasta and other European techniques. Every course is built on vegetables, fruits, grains, and legumes, sourced largely from the restaurant's own gardens and local growers. Meals are served on a terrace overlooking the Tuscan hills and the towers of San Gimignano, or in the interior rooms of the former monastery.

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

A monthly tasting menu built entirely from plants, prepared in-house from whole ingredients. Courses draw on global techniques—Sichuan pepper, tamarind, Greek yogurt—woven around seasonal vegetables from the restaurant's own gardens and local growers. Fermentation shapes the menu: kombucha, shoyu, vinegar, and fermented condiments run through every course, placed intentionally at the start to prepare the palate for richer components later. Wine pairings come from small Tuscan producers.

Cuisine
Fusion
International
Dietary options
Vegetarian options
Fully plant-based
Gluten-free options
Dairy-free options
Nut-free options
Health-intentional kitchen✓
Health intentionality across at least two sub-areas, with independent corroboration
Audited

Independent editorial coverage (Gambero Rosso, June 2026) corroborates the kitchen's deliberate nutritional architecture: the tasting is structured around protein distribution, digestibility, and the placement of fermented products at the start before richer components later. The chef is quoted: 'I am very interested in assessing which combinations can be well digested by our guests.'

Fermentation-derived sugars and salts from vegetable waste feature in desserts and cooking, alongside coconut sugar and home-produced agave syrup as refined-sugar alternatives. The tasting menu is balanced for protein, carbohydrate, sugar, and amino acid content.

Virtually every dish is prepared in-house from whole ingredients—sauces, dressings, stocks, pasta, fermented items, baked goods, desserts—with fermentation (kombucha, shoyu, vinegar) woven throughout.

Allergies & intolerances
How this kitchen handles the EU-14 allergens
Highly attentive
The restaurant reports attentive allergen handling — an allergen list, trained staff, or accommodation across several allergens. Declare your allergy when booking.
Allergens the kitchen handles
PeanutTree nutsShellfishFishMolluscsMilkEggsGluten
Ask about any allergen not shown. Kitchen separation isn't published — ask directly if you need a trace-free dish.
Coeliac diet: Coeliac guests can be accommodated with advance notice at booking.
Always confirm your allergy directly with the restaurant when booking.
Declared by the restaurant · April 2026 · not independently verified
Impact score
How this restaurant rates
4 - Recognised

Roughly 90% of ingredients come directly from named local producers, including Barbara and Paolo for fruits and vegetables, Ronzii e Piccole Erbe for herbs, and small family wineries like Podere Pellicciano for the wine programme, alongside produce from the restaurant's own gardens. The menu changes monthly, following seasonal availability.

Waste is addressed through deliberate circular practices: the kitchen works each ingredient to its fullest, roasting fruit seeds, dehydrating skins, and using fermentation to transform what might otherwise be discarded into kombucha, vinegar, and vegetable-based seasonings. Cloth napkins, returnable supplier packaging, no single-use tableware, and green energy round out the approach.

The restaurant maintains an ongoing commitment to local animal welfare through its support of Amici a 4 zampe, a cat and dog rescue shelter near Certaldo. As a fully plant-based kitchen listed in the We're Smart Green Guide, vegetables, fruits, grains, and legumes are the sole foundation of every course.

The impact dimensions
Local & direct sourcing✓
Seasonal cooking✓
Low waste & circular practices✓
Sustainable animal products✓
n/a
Social impact✓
Plant-forward menu✓

Roughly 90% of ingredients come from named local producers including Barbara and Paolo (Empoli, fruit and vegetables), Ronzii e Piccole Erbe for herbs, Podere Pellicciano and others for wines, plus the restaurant's own gardens.

The restaurant sources approximately 90% of ingredients directly from local suppliers, with named producers across produce (Barbara & Paolo in Empoli, Ronzii e Piccole Erbe for herbs), wines (Podere Pellicciano, SelvaticaLab, Feral), and its own gardens in Certaldo.

Non-local items represent a deliberate small share: Asian sauces, Asian peppers, and tahini. Grains and legumes are sourced from broader Italian or international producers without named local suppliers.

Evidence from the We're Smart Green Guide corroborates own-garden production and the regional focus.

Strongest sourceRestaurant submission

The tasting menu changes monthly, with 100% of fruits and vegetables following seasonal availability; the kitchen's tagline is 'Stagionale Vegetale.'

The restaurant's founding identity centres on seasonality—its tagline reads 'Stagionale Vegetale' (Seasonal Vegetable). One hundred per cent of fruits and vegetables in the tasting menu shift with seasonal availability, and the menu rotation is monthly, well beyond the quarterly threshold.

The We're Smart Green Guide listing, which cites the restaurant's 4-radish rating, corroborates this seasonal focus as a core principle.

This engagement spans the full scale: the kitchen is deliberately organised around seasonal produce, and the identity and messaging centre on this commitment.

Strongest sourceWe're Smart Green Guide ↗

Zero food waste through in-house fermentation and ingredient utilisation; returnable packaging, cloth napkins, no single-use tableware, and green energy.

Food waste is effectively zero. Fruit seeds are roasted; skins and zest are used for infusions, dehydrated, or repurposed. Fermentation transforms vegetable and fruit offcuts into kombucha, vinegar, and vegetable-based salts and sugars for use in cooking and desserts. The restaurant deliberately declines external food-waste-rescue apps because there is nothing left to redistribute.

Packaging practices: bulk drinks, returnable glass for beverages, returnable transport boxes from suppliers, cloth napkins, no single-use tableware (straws, cutlery, bags), and no disposable containers (butter, salt, pepper, sugar, sauce sachets).

The kitchen also operates on green energy, extending the circular approach to the kitchen's own operations.

Strongest sourceRestaurant submission

Dimension not applicable: the kitchen is 100% plant-based, eliminating all meat, poultry, fish, and seafood.

The restaurant is fully plant-based. No meat, poultry, fish, or seafood appears on any menu. This dimension is not applicable to fully plant-based kitchens under the SEERO rubric.

The We're Smart Green Guide confirms the plant-based positioning, and multiple independent review platforms (HappyCow, abillion) corroborate the exclusively plant-forward identity.

Strongest sourceWe're Smart Green Guide ↗

Ongoing support of Amici a 4 zampe, a local cat and dog rescue shelter near Certaldo.

The restaurant maintains an ongoing commitment to Amici a 4 zampe, a cat and dog rescue shelter located near Certaldo. This is a verifiable social commitment in the cause-support sub-area.

The shelter's existence is confirmed via Instagram (@amici.di.emma); the restaurant's involvement is self-declared.

Strongest sourceRestaurant submission

One hundred per cent plant-based kitchen; all dishes are built from vegetables, fruits, grains, and legumes by design.

The restaurant is fully plant-based by design. Every course is built from vegetables, fruits, grains, and legumes. Animal proteins are entirely absent from the menus.

The We're Smart Green Guide lists it as a 'pure plant choices' establishment. The restaurant's Instagram bio reads 'Stagionale Vegetale'. Multiple independent review platforms (HappyCow, abillion) confirm the exclusively plant-forward identity.

Strongest sourceWe're Smart Green Guide ↗
Sourcing signals
✓
Own-grown produce
✓
Direct named-farm sourcing
✓
In-house preparation
✓
Low-impact beverage program
✓
Low-waste packaging

Vegetables and fruits come from the restaurant's own gardens in Certaldo, corroborated by the We're Smart Green Guide.

Named local suppliers include Barbara & Paolo (fruits and vegetables, Empoli), Ronzii e Piccole Erbe (herbs), and Podere Pellicciano, SelvaticaLab, Feral (beverages).

Eighty per cent or more of main dishes prepared in-house, including pasta, doughs, sauces, stocks, fermented items, baked goods, and desserts; fermentation-derived kombucha and shoyu.

Natural wine, locally sourced wine, specialty coffee, high-quality tea, craft beers, craft sodas, and local mineral water all featured; named small producers from Tuscany and beyond.

Bulk drinks, no single-use tableware or disposable containers, cloth napkins, and returnable packaging for glasses and transport boxes.

Visit & practical info
Address, price, and more
Address
Via Rivellino, 3, 50052 Certaldo (FI), Certaldo, Italy
Open in Google Maps ↗
Price
€€€
Format
Eight to ten seats, monthly tasting menu, reservation required
Style
Fine dining
Cosy
Trendy
Good to know
Terrace (reservable)
Garden
Bar
Children's menu
Web
osteriadelvicario.com
Social
@osteria_del_vicario
Reserve a table

Earned a place on a Craves list

Top Treats Our highest-rated restaurants: impact score of four and five, awarded for consistent… →
Reviewed by My Treats
Last reviewed 24 Apr 2026
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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.
Recognised Strong practice across four or more dimensions, with independent corroboration.
This place
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
—
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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