Caffeine.

8 guides tagged Caffeine.
Jade Leaf Matcha Ceremonial Grade

Our pick for Caffeine.

Jade Leaf Matcha Ceremonial Grade

Top Pick. From Best Tea for Studying 2026.

Check price
  1. 01Explainer · ~9 min readCaffeine in Tea Bags by Brand: Tetley, Lipton, Twinings, Yorkshire & MoreA brand-by-brand table of how much caffeine each major tea bag brand says is in a cup, which brands publish nothing, and what black vs green tea means for your caffeine.
  2. 02Explainer · ~7 min readBarry's Tea Caffeine: How Much per Cup, and Which Blend Is Strongest?What Barry's Tea does and does not publish about caffeine, the typical range for a cup, how Gold Blend, Master Blend, Irish Breakfast, and Decaf differ, and which box to buy.
  3. 03Explainer · ~7 min readHow Much Caffeine Is in Tetley Tea? (mg per Bag, by Blend)Tetley's own published caffeine figures for its black, green, decaf, and herbal teas, what they mean for British Blend, and how steep time changes the number in your mug.
  4. 04Explainer · ~9 min readTea Caffeine Chart: mg in Black, Green, White, Oolong and MatchaMilligrams of caffeine per 8 oz cup for every major tea, from USDA FoodData Central and published lab studies, with coffee for scale and the brewing choices that move the number.
  5. 05Buyer's Guide · ~12 min readBest Tea for Studying 2026: Caffeine + L-Theanine, RankedThe seven teas we picked for long focus sessions, from a 60 mg matcha bowl down to a zero-caffeine midnight peppermint, with the honest published caffeine math for every pick.
  6. 06Explainer · ~10 min readMatcha Caffeine by Grams, Teaspoons & Serving Size (Chart)The reference table: how much caffeine is in 1 gram, 2 grams, 1 teaspoon, 1 tablespoon, and a 16 oz latte, built from published lab and manufacturer data.
  7. 07Explainer · ~12 min readTea vs Coffee: Caffeine, Health, Cost & Experience Compared (2026)The honest, data-driven head-to-head, caffeine in milligrams, what the health research actually says, cost per cup, and which one to reach for and when.
  8. 08Explainer · 9 min readHow to Brew the Perfect Cup of TeaWater temperature and steep time are the whole game. Here are the real numbers, by tea type, plus the bags and leaves worth brewing them with.
Back to the Journal

Our top-rated tea bags

Whatever you decide, these are the tea bags our reviews keep ranking on top. Live price check on each.

As an Amazon Associate we earn from qualifying purchases, at no cost to you.