Eight O'Clock Colombian Peaks — What '100% Colombian' Actually Means for Your Cup
100% Colombian means origin, not pH. Eight O'Clock Colombian Peaks reviewed — origin affects flavor, roasting determines acidity.
Peet's Coffee Medium Roast — Craft Roasting Claims vs. Actual Gut Chemistry
Peet's Coffee built its reputation on craft. Alfred Peet arrived in Berkeley in 1966 with European roasting traditions and a conviction that Americans deserved better coffee than the watery, commodity blends that dominated the market. He was right. Peet's raised the standard. But half a century later, the craft roasting claims Peet's makes about its medium roast don't fully account for what the roasting process actually does to your gut chemistry. And that gap is worth understanding.
What Is Peet's Coffee Medium Roast?
Peet's medium roast lineup includes blends like Cafe Domingo and single-origin offerings roasted to what Peet's describes as a rich, full-bodied profile that balances brightness with depth. Peet's roasts in small batches and emphasizes sourcing relationships — both genuine differentiators from mass commodity coffee brands.
But "small batch" and "craft" describe the scale and intention of the roasting operation, not the fundamental chemistry of what happens to the bean under heat. Peet's medium roast still uses high-temperature drum roasting — and the result is a cup that sits at approximately pH 5.0, consistent with all commercially roasted coffee regardless of batch size or sourcing quality.
~5.0
Peet's pH
5.82
Puroast pH
5X
Less Acid Than Leading Brands
Craft Roasting vs. Low Acid Roasting — The Critical Difference
Craft roasting optimizes for flavor complexity, sourcing quality, and roast consistency. These are genuinely valuable things. But craft roasting — as practiced by Peet's and virtually every Third Wave roaster — does not optimize for gut chemistry. The roasting temperatures and durations used by craft roasters still produce the quinic acids that cause acid reflux, heartburn, and gut inflammation in sensitive drinkers.
Low acid roasting is a fundamentally different process — one that extends roasting time and carefully controls temperature to allow the bean's chemistry to fully transform. This is what Puroast does. It's what the UC Davis research confirmed. And it's what no craft roaster in the Third Wave tradition has replicated — because it requires a different roasting philosophy entirely, not just better beans or smaller batches.
⚠️ The Craft Roasting Gap: Peet's raised the bar for sourcing and flavor. But flavor quality and gut-friendly chemistry are two different things. A beautifully sourced, carefully roasted Peet's medium roast still delivers approximately the same acid load as a commodity medium roast. The craft didn't fix the chemistry.
What Peet's Got Right — And Where Puroast Goes Further
Alfred Peet's original insight — that roasting process matters more than most American coffee companies admitted — was correct and transformative. The Third Wave of coffee he inspired got the industry thinking seriously about sourcing, processing, and roasting craft for the first time in decades. That's a genuine contribution.
But the Third Wave stopped at flavor. Puroast picks up where Peet's left off — applying the same conviction that roasting process matters, but asking a different question: not just "what does this taste like?" but "what does this do to your body?" The answer, confirmed by UC Davis across three peer-reviewed papers, is that slow-roasting produces a coffee with 5X less acid and 5X more antioxidant activity. The Fourth Wave starts here.
✅ The Fourth Wave: Puroast's patented slow-roasting process is the natural evolution of what Peet's started. Better sourcing plus better roasting chemistry equals coffee that's not just great to drink — it's genuinely good for you.
Frequently Asked Questions
Is Peet's medium roast low acid?
No. Peet's medium roast has a pH of approximately 5.0, consistent with all commercially roasted coffee. Craft roasting improves flavor complexity but does not meaningfully reduce acidity compared to standard commercial roasting.
Is Peet's Coffee better for your stomach than Starbucks?
Marginally — Peet's medium roast profiles tend to be slightly less bitter than Starbucks dark roasts. But the acid content is similar across all commercially roasted coffees. Neither is a low acid option for sensitive stomachs.
What is a good low acid alternative to Peet's medium roast?
Puroast House Blend or Uganda Single Origin are the closest matches to Peet's craft quality ethos — with 5X less acid and 5X more antioxidants confirmed by UC Davis research.
The Evolution of Craft Coffee.
Peet's got sourcing right. Puroast gets the chemistry right. Try the coffee that goes further — 5X less acid, 5X more antioxidants.
Subscribe & Save 15%Sources: Tomas, M. et al. (2023). Roasting and Antioxidant Activity in Coffee. Journal of Agricultural and Food Chemistry. | Peet's Coffee. (2023). Our Roasting Philosophy. peets.com. | Coffee and Gastrointestinal Health. Alimentary Pharmacology & Therapeutics.
