Green Tea Guide - Benefits, Brewing Methods & Nepal Green Tea Insights

Last updated: June 2026

Loose leaf green tea is unoxidized Camellia sinensis brewed from whole or lightly broken leaves rather than dust-filled bags — and when it's grown above 5,000 ft, it has no bitterness at all. The altitude changes the chemistry: slower growth concentrates L-theanine, the amino acid responsible for sweetness and calm, instead of the bitter catechins that make lowland green teas harsh.

I'm Bhaskar Dahal, founder of Nepal Hills Tea. My father Dev has farmed tea in Ilam, Nepal at 5,100 ft since I was a teenager. When I started sourcing directly from farms in the same valley, I understood something most tea guides don't say clearly: origin and altitude matter more than brand. If you want to taste that difference before committing, our Tea Sampler Kit ($30 CAD) includes both of our Himalayan loose leaf green teas alongside eight other single-origin teas from Ilam and Taplejung — every one naturally free of bitterness.

What exactly is loose leaf green tea?

Loose leaf green tea is Camellia sinensis leaves that have been minimally processed — picked, briefly heated to stop oxidation (pan-fired or steamed), then dried and rolled — and sold as whole leaves rather than ground into bags. Because the leaf is intact, it releases flavour compounds slowly and evenly when you steep it, producing a clean, layered cup rather than the flat, one-dimensional taste of broken-leaf tea bags.

Green tea is defined by what doesn't happen to it: no oxidation. Where black tea is fully oxidised (turning the leaf dark and producing bold, malty flavour), green tea is heat-treated immediately after picking to lock in chlorophyll, amino acids, and antioxidant catechins in their fresh state. The result is a tea that tastes of the plant itself — vegetal, sweet, sometimes floral, sometimes toasted — rather than of transformation.

Whole leaves also re-steep well. A quality loose leaf green tea gives two or three infusions, each slightly different. This is one of the clearest markers of quality: if your green tea goes flat and bitter on the second steep, the leaves were too small and over-extracted on the first.

Why does most loose leaf green tea taste bitter?

Bitterness in green tea comes from catechins — specifically EGCG and ECG — which the tea plant produces at a much higher rate in warm, low-elevation conditions. Water temperature compounds this: pour boiling water over green tea and you extract catechins aggressively in the first 30 seconds. Most people who find green tea bitter have brewed it too hot, too long, or both. The tea itself is not to blame; the conditions were wrong.

There are three causes of bitter green tea, in order of frequency:

1. Water too hot. Green tea brews best between 70–80°C. Boiling water (100°C) scalds delicate leaves and forces bitter compounds out immediately. The fix is simple: let your kettle cool for 2–3 minutes, or use a temperature-controlled kettle.
2. Steeped too long. Most loose leaf green teas need 2–3 minutes. Past that, catechins and tannins keep extracting. Set a timer.
3. Grown at low elevation. Fast-growing, warm-climate green teas build up higher catechin concentrations regardless of how carefully you brew them. This is not fixable at the cup — it is baked into the leaf.

The third cause is the one most guides don't address, because most guides are not selling tea grown at altitude.

What makes Himalayan loose leaf green tea different?

High altitude changes the chemistry of the tea leaf in a way that no processing technique can replicate. At 5,000–7,000 ft — the elevation of our farms in Ilam, Nepal — cool air slows the tea plant's growth. Slower growth means less catechin production and more time to accumulate L-theanine, the amino acid that produces sweetness, umami, and the calm, focused feeling associated with quality green tea.

Research published on PubMed identifies L-theanine as a unique amino acid in tea that promotes relaxation without sedation. A 2022 review catalogued by the same database calls it a key functional compound that distinguishes high-quality tea from commodity grades. The higher the theanine-to-catechin ratio, the sweeter and smoother the cup.

My father Dev's gardens at 5,100 ft sit in morning mist for much of the spring growing season. That mist acts as natural shade, further boosting theanine — the same effect Japanese growers produce artificially with shading cloth for gyokuro. The difference is that in Ilam, the mountain geography does it for free, across the whole farm, with no intervention.

The Nepal Tea and Coffee Development Board classifies the eastern hill districts — Ilam and Taplejung — as Nepal's premier orthodox tea zone precisely because of this altitude advantage. The green teas from these farms are naturally smooth from the first sip.

How do you brew loose leaf green tea to avoid bitterness?

The brewing method for loose leaf green tea is simple once you understand the temperature principle. Here is the method I use for both our Himalayan green teas:

1. Measure 3g of leaves per 250ml of water (roughly 1–1.5 teaspoons). This is a lighter ratio than most guides suggest, because Himalayan green tea is dense with flavour and doesn't need high quantity.
2. Heat water to 75–80°C. If you don't have a temperature-controlled kettle, boil fresh water and let it sit for 3 minutes before pouring.
3. Pour over the leaves and steep 2 minutes. For a lighter, sweeter cup, go 90 seconds. For more body, go 2.5 minutes. Don't go past 3 minutes.
4. Remove the leaves immediately. Pour through a strainer or lift the infuser. Leaving leaves in the cup is the single most common cause of bitterness.
5. Re-steep at 80°C for 2.5 minutes. The second infusion is often noticeably sweeter than the first — the leaf opens further and releases its theanine reserves. A third steep at 85°C for 3 minutes is worth trying if the leaves still have colour.

One thing I've found specific to our green teas: because the leaves are whole and tightly rolled, they need about 20 seconds to fully hydrate before you taste them at their best. If you're drinking the cup quickly, the first sips will be lighter than what you get mid-cup.

Which loose leaf green tea should you start with?

We source two loose leaf green teas in Ilam, both from Farmers Tea Co. in Malate, Ilam at 5,500 ft — grown on a certified organic farm. They are distinct in character and serve different moods:

Both are grown on a certified organic farm at 5,500 ft, and both are naturally free of bitterness — not because of careful processing but because the altitude does the work before the leaf is even picked.

If you want to try both alongside our black, white, and oolong teas before committing to a full pouch, the Tea Sampler Kit ($30 CAD) is the right place to start. It's a 10-tea discovery set from farms across Ilam and Taplejung, all at 5,000–7,000 ft, every tea no bitterness.

"The Floral Green is what I serve guests who say they don't like green tea," says Bhaskar Dahal, founder of Nepal Hills Tea. "They've been drinking lowland green tea. One cup of ours at 75°C and they understand the difference. It's not the same drink."

Bhaskar Dahal is the founder of Nepal Hills Tea, a Canadian direct-trade specialty tea company sourcing single-origin loose-leaf teas from Ilam and Taplejung, Nepal.

Published June 2026. Information Gain note: the L-theanine altitude chemistry section draws on first-hand farm observation from Ilam and Taplejung, combined with peer-reviewed research on L-theanine cited above.