What is GC&E?

Grand Cru & Etiquette (GC&E) is a private advisory practice and an independent media outlet (the GC&E Review), founded in Paris in 2025. It is a cultural intelligence editorial at the intersection of French wine, culture, and professional distinction — for a French and international audience.

Who is the founder?

Maria Kumessa is the founder and principal of GC&E. She holds a Master's degree in Management, a Certified Champagne Specialist qualification from the Comité Champagne, and the title of French Wine Ambassador from the École des Vins et Spiritueux de Paris. She has formal training in sommellerie and has been studying oenology with discipline since 2019. Before founding GC&E, she spent years in senior leadership roles in nonprofit and healthcare organisations in France.

Does GC&E sell wine?

No. GC&E does not sell, distribute or hold stock of wine or spirits.
Recommendations made within the advisory engagement are independent and leave you entirely free to source your selections from the retailer of your choice.

What is the private advisory engagement?

The advisory is a bespoke, one-to-one engagement — structured as a private coaching — designed around your specific situation and objectives. It begins with a conversation about the specific context you are operating in, the specific gaps you have identified, and the specific room you need to be ready for.

It is conducted in English or French, remotely or in person in Paris.

What does the engagement cover?

Every engagement is built around your situation and objectives, so no two are identical. to learn more, please, browse our Services page.

Is the engagement confidential?

Entirely. Everything shared within an advisory engagement is treated as strictly confidential. GC&E does not reference client relationships in its communications, does not use client information for any purpose other than the delivery of the engagement, and does not disclose the existence of a relationship without explicit consent.

How many clients does GC&E work with at one time?

A small number — deliberately so. The quality of each engagement depends on the attention given to it. GC&E does not scale its advisory practice. When capacity is full, enquiries are placed on a waiting list.

Is the engagement available outside France?

Yes. Remote engagements are conducted worldwide. In-person sessions take place in Paris. For clients who require sessions in another location, this can be discussed at the time of the discovery conversation.

In what languages does GC&E operate?

All advisory engagements, and correspondence are conducted in English and French.

Where is GC&E based?

GC&E's adress is at 60 rue François 1er, 75008 Paris, France.
Remote engagements are conducted worldwide.

May I propose a collaboration, speaking engagement or media enquiry?

Collaboration proposals, speaking invitations and media enquiries are welcome.
Please contact us through the Contact section of the Site with a brief description of your project. We read every message and respond to those that are a genuine fit.

Is the editorial content on the Site free?

Yes. All articles published on the Site are freely accessible without registration.

At what frequency is new content published?

GC&E publishes on three distinct channels.

• Articles appear in the Site once a monthly.

• The Newsletter goes out twice a month.

• The GC&E Review, a paid quarterly magazine, will be published once a season.

Does GC&E use artificial intelligence to write its content?

No. All content published under the GC&E name is written by Maria Kumessa or by contributors working under her editorial direction. Where research tools are used in the drafting process, all content is subject to human editorial judgement, verification and revision before publication. GC&E does not publish content generated entirely by AI and presented as original analysis.

May I cite or reproduce GC&E content?

Brief quotation for journalistic, academic or non-commercial purposes is permitted, provided the source is clearly attributed as: Grand Cru & Etiquette, www.grandcruandetiquette.com, with a link to the original where technically possible. Any reproduction beyond brief quotation — in whole or in substantial part — requires prior written authorisation from GC&E. For requests, please use the Contact section of the Site.

How do I get in touch?

Through the Contact section of the Site at www.grandcruandetiquette.com/contact. Every message is read personally by Maria. Responses arrive within 48 hours on business days.