Black Tea Caffeine Content: From Science to Practical Brewing
1. How Much Caffeine Is in Black Tea? An 8-ounce (240ml) cup of black tea contains 40–70mg of caffeine, depending on factors like leaf grade and processing: Comparative Data (per 8-ounce serving): Beverage Caffeine Content Duration of Alertness Black Tea 40–70mg 3–4 hours Coffee (Arabica) 95mg 4–5 hours Green Tea 20–45mg 2–3 hours Sources: USDA, SGS […]
Black Tea vs Green Tea: Complete Guide to Processing, Health Benefits & Daily Rituals
1. Core Difference: Fermentation Chemistry Black and green tea share the same leaf (Camellia sinensis), but their processing diverges radically: 2. Flavor Battle: Bold vs. Bright 3. Evidence-Based Health Benefits 4. Caffeine & Brewing Science Factor Green Tea Black Tea Caffeine 20-30mg/cup 40-50mg/cup Brewing 80℃ (2-3 mins) 95℃ (3-5 mins) Neurochemistry High theanine → Zen […]
