How much caffeine is in Korean Sejak Green Tea?

Each 8 oz cup (240ml) serving contains approximately 30 mg of caffeine. For comparison, a standard 8 oz cup of brewed drip coffee contains around 95 mg. Actual content varies with dose, water temperature, and contact time.

What temperature should I use for Korean Sejak Green Tea?

Target 90°C (194°F). Below this range the cup tends toward sourness and thinness from under-extraction; above it, bitterness rises faster than sweetness.

How long should Korean Sejak Green Tea be extracted?

Extract for 2:30-3:30 using Small Teapot, at a ratio of 12g/L (3g leaves to 240g water), prepared at Whole Leaf. Time and ratio move together: a heavier dose generally wants a shorter contact time.

Why does my Korean Sejak Green Tea taste bitter?

Bitterness almost always indicates over-extraction. Shorten the contact time, lower the water temperature slightly, or use less leaf. Change one variable at a time so you can tell which one was responsible.

Who should avoid Korean Sejak Green Tea?

Caffeine and serving strength vary with dose, preparation, and individual sensitivity. Use individualized medical guidance for pregnancy, medication interactions, allergies, reflux, or other health concerns. This is general educational information, not medical advice — consult a qualified healthcare professional about your own circumstances.

Reviewed Aug 2026

Green Tea & Matcha · Boseong, South Korea

Korean Sejak Green Tea

Name: How to Brew Korean Sejak Green Tea
Prep time: 3 min
Cook time: 3 min
Total time: 3 min
Yield: 8 oz cup (240ml)
Cuisine: Boseong, South Korea
Ingredients: 3 g loose-leaf green tea; 240 g filtered water at 90°C

Steamed greens, sesame, and a balanced savory finish.

A spring Korean green tea with a gentle body and a clean balance of savory and sweet notes.

Sensory profile

Comparative scale

sweetnessHigh

acidityLow

bitternessLow

bodyModerate

aromaVery high

You should taste

How it unfolds

Aroma → Palate → Finish

AromaBefore and as you sip

Steamed Greens

pronounced aroma

PalateWhile it is in the mouth

clear sweetness

FinishAfter you swallow

Seaweed

moderate body

Where it sits

Stronger than 75 of the 345 other drinks in the catalogue, and weaker than 256.

That is 30 mg in a 8 oz cup (240ml) serving — a concentration of 12.5 mg per 100 ml. The scale above ranks whole servings, and servings differ in size, so a larger drink can sit further right while being weaker cup for cup.

CupCura editorial estimate. No public food database has measured this preparation, so this figure is our own and is not independently sourced.

What people say

Reviews and photographs from people who have actually drunk this. Everything here has been read by a moderator before publication.

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Gear for this drink

Fellow Ode Brew Grinder Gen 2

Direct-drive motor with 64mm stainless steel flat burrs engineered specifically for pour-over, drip, and cold brew clarity.

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Sensory profile

You should taste

How it unfolds

Where it sits

What people say

Fellow Ode Brew Grinder Gen 2

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