Tarrazu Peaberry (Coffea arabica)
Tarrazu Peaberry is a premium variant of Coffea arabica grown in Costa Rica's Tarrazú region, containing 0.8-1.4% caffeine and 3-5% chlorogenic acids. These compounds provide adenosine receptor antagonism for alertness and antioxidant activity, though specific research on this cultivar variant is lacking.

Origin & History
Tarrazu Peaberry is a cultivar variant of Coffea arabica, consisting of single, round peaberry seeds (a natural mutation occurring in 1-9% of coffee cherries) grown in the Tarrazu region of Costa Rica at elevations of 1,200-1,900 meters in rich volcanic soils. It is harvested from smallholder farms December-February, where varieties like Caturra, Catuai, and Typica predominate, and processed via washed methods to yield strictly hard bean (SHB) coffee with intense acidity, body, fruit, and chocolate notes.
Historical & Cultural Context
Tarrazu Peaberry has no recorded historical use in traditional medicine systems. C. arabica originated in Ethiopia and spread globally from the 15th century for beverage use, not medicinal applications; Tarrazu cultivation began in the 18th-19th centuries primarily for export as a commodity crop.
Health Benefits
• No specific health benefits documented for Tarrazu Peaberry variant (no clinical trials found) • General C. arabica coffee contains caffeine (0.8-1.4% dry weight) for potential alertness enhancement (evidence quality: not studied for this variant) • Contains chlorogenic acids (3-5%) with theoretical antioxidant properties (evidence quality: not studied for this variant) • May share general coffee's glucose metabolism effects via AMPK pathway (evidence quality: not studied for this variant) • Potential cardiovascular effects common to C. arabica consumption (evidence quality: not studied for this variant)
How It Works
Caffeine in Tarrazu Peaberry acts as an adenosine receptor (A1 and A2A) antagonist, blocking drowsiness signals and promoting alertness. Chlorogenic acids inhibit glucose-6-phosphatase and provide antioxidant activity through free radical scavenging. The peaberry processing may concentrate these bioactive compounds compared to regular beans.
Scientific Research
No clinical trials, RCTs, or meta-analyses specific to Tarrazu Peaberry were identified in the search results or known PubMed records. While general coffee (C. arabica) studies exist (e.g., on chlorogenic acids for metabolic effects, PMID: 29952266), none distinguish this cultivar variant by region or peaberry form, precluding specific evidence.
Clinical Summary
No clinical trials have specifically studied Tarrazu Peaberry variant health effects. General arabica coffee research shows caffeine doses of 40-300mg improve cognitive performance and alertness in multiple randomized controlled trials with sample sizes ranging from 20-200 participants. Chlorogenic acid studies suggest 140-400mg daily may support glucose metabolism, but these findings cannot be directly applied to this specific cultivar.
Nutritional Profile
Tarrazu Peaberry (Coffea arabica) — nutritional data extrapolated from C. arabica green and roasted bean composition, as peaberry-specific analytical studies are absent. Per 100g roasted ground coffee: Calories ~0 kcal (as brewed beverage per 240ml serving ~2 kcal). Macronutrients in dry roasted bean: Protein 10-13g/100g (predominantly non-digestible due to roasting Maillard reactions); Carbohydrates 28-32g/100g (mostly non-fermentable polysaccharides; negligible glycemic impact in brewed form); Lipids 15-17g/100g (diterpenes cafestol and kahweol ~4-5mg per unfiltered cup; largely retained in filter paper when paper-filtered). Bioactive compounds: Caffeine 1.1-1.4% dry weight in green bean, reducing to approximately 0.8-1.2% post-roast (brewed cup ~80-120mg per 240ml); Chlorogenic acids (CGA) 6-9% in green bean, degrading significantly to 1-4% post-roast (predominant isomers: 5-caffeoylquinic acid, 3-caffeoylquinic acid); Trigonelline 0.6-1.0% green bean (partially converts to niacin/vitamin B3 during roasting, yielding ~0.5-1.0mg niacin per cup); N-methylpyridinium (NMP) formed during roasting ~0.1-0.3mg/cup. Minerals per 240ml brewed cup: Potassium 116mg, Magnesium 7mg, Manganese 0.1mg, Niacin (B3) ~0.5mg. Peaberry morphology (single oval bean vs. flat-sided pair) is theorized to produce more uniform roasting and potentially higher concentration of volatiles and soluble solids per bean mass, though quantified compositional differences versus flat-bean Tarrazu C. arabica are not documented in peer-reviewed literature. Bioavailability note: CGAs show 30-72% absorption in humans; caffeine nearly 100% bioavailable orally; cafestol/kahweol bioavailability depends heavily on brewing method (espresso ~4mg/cup, paper-filtered ~0.2mg/cup).
Preparation & Dosage
No clinically studied dosage ranges exist for Tarrazu Peaberry in extract, powder, or standardized forms, as it lacks biomedical trials. Typical culinary consumption of C. arabica coffee is 1-3 cups (200-600 mg caffeine) daily, but no standardization (e.g., to chlorogenic acid) is documented for this variant. Consult a healthcare provider before starting any new supplement.
Synergy & Pairings
Green tea extract, L-theanine, rhodiola rosea, guarana, yerba mate
Safety & Interactions
Tarrazu Peaberry contains caffeine which can cause anxiety, insomnia, and increased heart rate at doses above 400mg daily. Caffeine interacts with adenosine medications, certain antibiotics (ciprofloxacin), and may reduce iron absorption when consumed with meals. Pregnant women should limit caffeine intake to under 200mg daily, and individuals with anxiety disorders should use caution.