Dieter Oberg is considered one of the most distinguished experts for extra virgin olive oil in the German-speaking world. For over three decades, Dieter Oberg has been involved with sensory analysis, quality assessment, and the scientific evaluation of olive oils from across the Mediterranean region.
His mission: to empower olive oil consumers and professionals to recognize quality themselves – beyond marketing promises and misleading labels. Dieter Oberg shares this expertise through seminars, articles, and consulting.
Vita at a glance
- 30+ years of experience with extra virgin olive oil
- IOC-standard training (International Olive Council)
- Tasting panels according to DOP methodology (EU Regulation 2568/91)
- 15+ years as a seminar leader for olive oil sensory analysis
- Consultant for importers, gastronomy, and end consumers
Dieter Oberg’s career path
Dieter Oberg discovered his passion for olive oil back in the 1990s on numerous trips through Italy, Spain, and Greece. What began as a personal interest gradually became a calling: Dieter Oberg trained as a sensory analyst under the strict guidelines of the International Olive Council (IOC) and regularly took part in international tasting panels. In Italy, he worked closely with farmers, olive mill operators, and sensory scientists—experiences that continue to shape his understanding of methodology today.
Key Areas of Expertise
- Sensory analysis – identification of positive attributes (fruity, bitter, pungent) and defects (rancid, winey-vinegary, musty, muddy) according to the IOC panel test
- Polyphenols and minor components – scientifically proven health-promoting compounds (including hydroxytyrosol, oleocanthal, tyrosol)
- Quality parameters – acidity, peroxide value, K232/K270 values, and pyropheophytins as indicators of freshness, storage, and correct processing
- Cultivation and harvesting methods – the impact of traditional versus super-intensive farming on aroma, polyphenol content, and shelf life
- Olive varieties and terroir – variety-specific profiles of Taggiasca, Coratina, Frantoio, Picual, Koroneiki, and other regional varieties
How a tasting with Dieter Oberg works
A tasting based on IOC methodology follows a strict protocol. Dieter Oberg works with standardized blue tasting glasses, tempered to exactly 28°C—this keeps the oil’s color hidden so it doesn’t influence the judgment. In three steps, first the aroma (olfactory), then the taste in the mouth (gustatory), and finally the retronasal perception in the throat are assessed. Each attribute—fruity, bitter, pungent—is recorded on a 10-point scale. Only the combination of chemical analysis and the sensory panel test leads to the final classification as “Extra Virgin”, “Virgin”, or “Lampante”.
Seminars at Organic Farming Italy
Dieter Oberg leads exclusive olive oil seminars for the Organic Farming Italy community. In the one-day seminar, participants learn sensory testing according to IOC methodology, taste fresh oils from across Europe, and discover how cultivation, harvesting, and processing affect quality. By the end, they know the key flavor attributes, can name typical defects, and understand what really matters when buying their next bottle.
Contributions by Dieter Oberg on organicfarming-italy.com
- Recognizing Good Olive Oil: 5 Mistakes When Buying Olive Oil
- Healthy Olive Oil – Why Extra Virgin Olive Oil is So Valuable
- Olive Oil Flavor Diversity – Varieties, Aromas, and Tasting
- Accompanying Fats – The Underestimated Active Ingredients in Olive Oil
- Mediterranean Diet – Mediterranean Nutrition as Prevention
- Olive Oil Quality Grades – Recognizing Quality and Choosing Correctly
Methodology & Scientific Foundations
Dieter Oberg’s work is based exclusively on internationally recognized standards and verifiable scientific sources:
- International Olive Council (IOC) – International organization for olive oil standards, based in Madrid
- EU Regulation 2568/91 – binding methods for the chemical and sensory analysis of olive oil
- EFSA Health Claim on Olive Oil Polyphenols – scientific confirmation of the effect (≥ 5 mg hydroxytyrosol per 20 g)
- IOC Chemistry & Standardisation – Panel Test Methodology according to international standards
- German Society for Fat Science (DGF) – German standards for fat analysis
Contact & Seminar Inquiries
Inquiries about seminars with Dieter Oberg, individual tastings, or expert advice are welcome via our contact form.