Taste and Aroma

Yes — all true teas contain caffeine. White tea, green tea, oolong, and black tea all come from the same plant (Camellia sinensis), and that plant naturally produces caffeine. There's no such thing as caffeine-free green tea or caffeine-free black tea from this plant.

What varies significantly is how much caffeine ends up in your cup. The type of tea, how long you steep it, and the water temperature all affect the final caffeine level. This guide covers the numbers, what they mean for your day, and which Nepal Hills teas are your best options if you're watching your caffeine intake.

How Much Caffeine Is in Tea?

Caffeine content in tea varies more than most people realize. The ranges below reflect typical brewed cups using standard amounts (2–3g of tea per 250ml) and normal steeping times.

Even the highest-caffeine tea — black tea — contains roughly half the caffeine of a cup of drip coffee. This is why many people find they can drink tea throughout the day without the jitteriness or crash associated with coffee.

Why Does Caffeine Vary Between Tea Types?

The caffeine difference between white, green, oolong, and black tea comes down to processing, not the raw leaves. All tea starts as the same plant. What happens after harvesting determines the final product.

White Tea: Least Processed, Lowest Caffeine

White tea is made from young buds and leaves that are simply withered and dried — minimal processing, very little oxidation. Young buds actually contain higher concentrations of caffeine by weight than older leaves, but because white tea is so delicately brewed (lower temperature, shorter steep time), less caffeine is extracted into the cup.

Green Tea: Lightly Processed, Moderate Caffeine

Green tea leaves are heated shortly after harvesting to stop oxidation, then rolled and dried. Caffeine content is moderate — and strongly affected by brewing temperature. A 4-minute green tea steeped at 85°C will have significantly more caffeine than a 2-minute steep at 75°C.

Oolong Tea: Partially Oxidized, Variable Caffeine

Oolong sits between green and black tea in both oxidation and caffeine. Lighter oolongs (20–30% oxidation) are closer to green tea; darker oolongs (60–70% oxidation) are closer to black. Our Floral Oolong ($10/25g) is lightly oxidized, giving it a gentle caffeine profile. Our Dark Oolong ($10/25g) is bolder and carries more caffeine.

Black Tea: Fully Oxidized, Highest Caffeine

Black tea is fully oxidized — the leaves are rolled and allowed to react with oxygen until they turn brown, developing the characteristic bold flavour and higher caffeine content. That said, Nepali black teas like our Muscatel Black ($10/25g) from the Norling Speciality Tea estate in Ilam are surprisingly smooth. The honey-grape, dried apricot notes come without bitterness — even at full oxidation, altitude-grown leaves from 5,000–7,000 ft develop natural sweetness that tames the tannins.

What Affects Caffeine Levels in Tea?

Tea type is just the starting point. These variables can shift your cup's caffeine up or down by 30–50%:

Water Temperature

Hotter water extracts caffeine faster and more completely. A green tea brewed at 85°C will have more caffeine than the same tea brewed at 70°C for the same duration. This is one reason brewing white and green teas at lower temperatures (70–80°C) produces both a more pleasant flavour and a gentler cup.

Steeping Time

Longer steeping = more caffeine extraction. This follows a diminishing returns curve — most caffeine is extracted in the first 2–3 minutes. A 5-minute black tea steep will have meaningfully more caffeine than a 3-minute steep.

Leaf-to-Water Ratio

More tea per cup = more caffeine. Standard ratio: 2–3g per 250ml. If you're using a heaped tablespoon, you may be brewing at 4–5g, which increases caffeine proportionally.

Re-steeping

Good news for people who re-steep their leaves: each successive steep extracts less caffeine than the previous one. The second steep of a white tea is noticeably gentler than the first. This makes high-quality whole-leaf teas like ours particularly efficient — you get more cups per gram, with diminishing caffeine across the session.

Tea vs. Coffee: The Real Caffeine Comparison

People who switch from coffee to tea often notice they feel calmer and more sustained through the day — without the spike and crash. There are two reasons for this:

L-theanine. Tea contains an amino acid called L-theanine that promotes calm alertness. It works synergistically with caffeine — moderating the stimulation and extending its duration. This is why tea's caffeine hits differently than coffee's, even at similar milligram amounts.

Lower total dose. A coffee drinker switching to black tea typically halves their caffeine intake without feeling deprived. A switch to green or white tea brings it down further.

Our guide to switching from coffee to tea covers this transition in full — including which Nepal Hills teas work best as a coffee substitute and which are better for winding down.

Lowest-Caffeine Options at Nepal Hills Tea

If you're reducing caffeine, here's where to start in our lineup:

• Floral White Tea ($10/25g) — spring blossom, soft rose, velvety. Lowest caffeine in our range. No bitterness. Perfect for afternoons and evenings. Sourced from Farmers Tea Co, Ilam.
• Fresh White Tea ($10/25g) — wildflower, morning dew, crisp and clean. Our most minimal tea. Also from Farmers Tea Co, Ilam.
• Organic Light Green Tea ($20/50g) — smooth, low-stimulation, grown on certified organic farms. From Farmers Tea Co, Ilam at 5,500 ft.
• Floral Green Tea ($10/25g) — naturally floral, jasmine-adjacent lightness. No added flowers.

All teas grown at 5,000–7,000 ft in Ilam and Taplejung. High altitude + hand processing = naturally smooth cups with no bitterness, regardless of caffeine level.

Try Nepal Hills Tea

Not sure where to start? The Tea Sampler Kit ($30) includes 10 single-origin teas across all four types — a good way to compare caffeine levels and flavours across the whole range before committing to full sizes.

• Nepal Hills Tea Sampler Kit – 10 teas, 5g each — CAD $30
• Floral White Tea – lowest caffeine, spring blossom — CAD $10/25g | $45/180g
• Muscatel Black Tea – honey-grape, no bitterness — CAD $10/25g | $44/180g
• Light Tea Lovers Pack – 4 green + white teas, 125g — CAD $46.47

Free returns. Ships across Canada.

Frequently Asked Questions

Does all tea have caffeine?

All tea made from the Camellia sinensis plant — including white, green, oolong, and black tea — contains caffeine. Herbal teas (chamomile, peppermint, rooibos, etc.) are not made from the tea plant and contain zero caffeine. The terms can be confusing because both are called "tea," but only true teas contain caffeine.

How much caffeine is in a cup of black tea?

A standard brewed cup of black tea (250ml, using 2–3g of tea) contains approximately 40–70mg of caffeine. This is roughly half the caffeine of a cup of drip coffee. Steeping time and temperature affect the final amount — a 5-minute steep at boiling will extract more caffeine than a 3-minute steep at 90°C.

Does green tea have a lot of caffeine?

Green tea has moderate caffeine — typically 25–45mg per cup, about one-third of a coffee. It also contains L-theanine, an amino acid that produces calm alertness rather than jitteriness. Brewing green tea at lower temperatures (75–80°C) reduces caffeine extraction significantly.

Is white tea caffeine-free?

No. White tea contains caffeine — roughly 15–30mg per cup — but it has the least of any true tea. It is not caffeine-free. If you need zero caffeine, choose an herbal tisane. If you're simply reducing caffeine while keeping the pleasure of real tea, white tea is your best option.

Does steeping tea longer increase caffeine?

Yes. Longer steeping extracts more caffeine. Most caffeine is released in the first 2–3 minutes. A 5-minute steep can have 30–50% more caffeine than a 2-minute steep of the same tea. Use shorter steep times and cooler water to reduce caffeine.

Why does tea caffeine feel different from coffee caffeine?

Tea contains L-theanine, an amino acid that works synergistically with caffeine to produce calm, sustained alertness rather than a sharp spike. Tea also delivers caffeine in a smaller total dose — typically 15–70mg vs 80–120mg in coffee. The combination explains why tea drinkers often feel focused but not jittery.

Related Reading

• Best Tea for Sleep: Low-Caffeine Options That Actually Work
• Switching from Coffee to Tea: A Practical Guide
• Best Tea for Energy: How to Get a Sustained Lift Without the Crash
• White Tea Benefits: Why the Least Processed Tea May Be the Healthiest
• How to Brew Loose Leaf Tea: The Complete Guide
• Loose Leaf Tea vs Tea Bags: Is There a Real Difference?