Know What’s Inside the Bottle Before You Buy.
Independent CDR OxiTester lab analysis—measuring real polyphenol levels, free fatty acidity, and peroxide freshness—paired with cultivar chemistry, origin transparency, and live aisle prices across major US grocers and estate mills.
CDR OxiTester Lab Analysis
Physical testing of bottles right off the retail shelf for antioxidant Polyphenols (mg/kg), Free Fatty Acidity (%), and Peroxide Value (meq O2/kg) freshness.
Store-by-Store Aisle & DTC Guide
Compare 178+ actively sold extra virgin olive oils across Wegmans, Whole Foods, Walmart, Target, Trader Joe’s, Costco, and Reddit-recommended direct estate mills.
Origin & Cultivar Chemistry
Evaluate single-origin traceability, PDO/PGI/COOC certifications, dark glass/tin UV protection, and OleaDB oleic-to-linoleic fatty acid benchmarks.
EXPLORE OUR OLIVE OIL RESEARCH
Verified producer data, olive variety profiles & official inspection records
Bottle Database
Compare bottles sold at major grocery stores and online, with origin transparency, olive variety profiles, and retail prices.
Cultivar Chemistry
445 olive varieties ranked by healthy oleic acid, antioxidant levels, and high-heat cooking stability.
PDO / PGI / COOC Standards
142 official regional seals comparing strict freshness limits (0.30%–0.50% acidity) against the lax 0.80% supermarket rule.
FDA Port Refusals
Official US FDA customs detentions and recalls for olive oil adulteration, seed-oil dilution, and mislabeling.
SMART SHOPPER GUIDES & KITCHEN TESTS
What Does 'High-Polyphenol' Olive Oil Actually Mean? The Simple Guide to the Peppery Throat Catch
Ever tasted an olive oil so fresh it made you cough once? That peppery sensation comes from oleocanthal—a natural plant compound with remarkable anti-inflammatory power.
Dark Glass vs. Plastic Squeeze Bottles vs. Clear Glass: How Packaging Ruins (or Saves) Your Oil
Squeeze bottles are trendy and convenient on the stove, while clear glass bottles look pretty on the shelf. Here is how long your olive oil actually survives in each container.
Can You Fry & Roast with Extra Virgin Olive Oil? What Kitchen Temperature Tests Actually Show
You've probably heard the myth that olive oil smokes and turns toxic in a hot skillet. Here is why fresh, high-antioxidant olive oil is actually one of the safest cooking fats up to 410°F.
The 7 Best Supermarket Extra Virgin Olive Oils in 2026 (And 4 to Leave on the Shelf)
We lab-tested 30 popular grocery store olive oils for freshness, safe cooking temperature, and real single-origin purity. Here is why an $11 Costco bottle beat $30 designer brands.