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Our authors

The people behind Grape Guru's wine knowledge – well-founded, honest and passionate about good wine.

Robert Kozinski

Robert Kozinski

Co-Founder & Sommelier

Robert is co-founder of Grape Guru, a certified sommelier (IHK) and WSET Level 2 graduate. He combines in-depth wine knowledge with technology to make wine more accessible for everyone.

Johannes Quernheim

Johannes Quernheim

Wine Influencer & Content Creator

Johannes is one of the most popular wine content creators in the German-speaking world, making wine tangible for a large community.

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