Guide
Why Does Hojicha's Caffeine Content Vary So Much Across Brands?
The short answer
Search "hojicha caffeine" and you'll meet numbers that don't agree: roughly 7.7mg per cup from one source, about 20mg from another, 5–8mg from a third, 7–20mg from a fourth. Hojicha is a roasted style within Japan's broader green tea family, and none of the six vendor and tea-education sites we checked cites an independent lab test — each states a figure built on its own assumed serving size and brewing method, which is the real reason the numbers scatter.
The numbers we found, source by source
| Source | Figure reported | Assumed serving |
|---|---|---|
| Hojicha Lab | 7–20 mg | 8 oz / 240 ml, 2g leaf, 1–2 min at 90–95°C |
| Hojicha.co | ~7.7 mg | 250 ml cup |
| Matcha Direct Kyoto | ~20 mg | ~200 ml cup |
| Yedoensis | 5–8 mg | 8 oz cup |
| Mizuba Tea Co. | ~7–8 mg | 8 oz cup |
| Nio Teas | as little as 10 mg (≈19mg per gram of dry leaf) | not stated |
Every figure is plausible on its own terms. None is directly comparable to any other, because "a cup" means something different from source to source before a single gram of tea is even brewed.
Four reasons the same word covers different amounts
Serving size. 200ml, 240ml (8oz) and 250ml aren't identical, and a figure quoted "per cup" without a stated volume can't really be checked at all.
Leaf part. Kuki-hojicha (stem/twig tea) is reported as lower in caffeine than leaf hojicha, and hojicha roasted from younger sencha-harvest leaf is reported as slightly higher than hojicha made from more mature bancha-harvest leaf — consistent with caffeine concentrating more in young leaf tissue than in stems.
Roast degree. Hojicha is roasted at high heat — commonly cited in the 160–220°C range — and caffeine itself sublimes (turns from solid to gas) at around 178°C. Roast past that point for longer and some caffeine is genuinely driven off; roast lighter or shorter and less is. Two batches both labeled "hojicha" can have gone through meaningfully different roasts.
Brewing. Steep time, water temperature and leaf-to-water ratio change how much caffeine actually ends up in the cup regardless of the dry leaf's starting point.
What none of our sources did
Not one of the six pages we checked cited an independent, third-party caffeine analysis. Every number traces back to the seller's or educator's own stated (or unstated) brewing assumptions. That's not a criticism of any single source — it's the actual state of publicly available hojicha caffeine data, and it's the honest reason a "hojicha has Xmg of caffeine" claim should be read as a rough, source-specific estimate rather than a fixed property of the tea.
How to actually compare
If caffeine level matters to your choice, compare figures from the same source across different teas (their own method stays constant), rather than one number from one hojicha brand against a different number from another. And check the leaf type on the package — stem/twig (kuki) hojicha sits at the low end of every range we found, leaf hojicha nearer the high end.
Sources
- Hojicha Lab — Hojicha Caffeine: The Complete Chart vs. Coffee, Matcha & Black Tea
- Hojicha.co — Caffeine in Hojicha (Roasted Green Tea)
- Matcha Direct Kyoto — How much caffeine is in hojicha vs matcha and coffee?
- Yedoensis — Caffeine Levels in Japanese Teas: A Guide to Different Brews
- Mizuba Tea Co. — What is Hojicha or Houjicha?
- Nio Teas — Learn How Much Caffeine is in Hojicha Tea
- UC Santa Cruz Chemistry Dept. — Isolation and Sublimation of Caffeine from Tea Leaves (undergrad lab background on caffeine's sublimation behavior; a widely repeated ~178°C figure appears elsewhere but is not itself stated in this document)
FAQ
- So which caffeine figure should I actually trust?
- None of them alone — treat any single number as a rough, source-specific estimate rather than a lab-verified constant, since none of the sources we checked cite independent testing.
- Is kuki hojicha (stem tea) really lower in caffeine than regular hojicha?
- Multiple sources describe stems and twigs as lower in caffeine than young leaf tissue, so kuki-hojicha tends to sit at the low end of any brand's reported range — consistent with, though not independent proof of, that general leaf-vs-stem pattern.
- Does a darker roast always mean less caffeine?
- It's a general tendency, not a guarantee — heat near or above caffeine's roughly 178°C sublimation point can drive some off, but roast time, temperature and the starting leaf all vary by maker, so two teas both labeled 'hojicha' aren't guaranteed to match.
This article is for information only, not health or medical advice — we describe tea, not what tea will do for your body. Prices, availability and harvest details change; always check the linked vendor or official page before buying. Some outbound links are affiliate links — they never change what we recommend (see /how-we-review).