Write down six measurements and two judgments: how much leaf, how much water, what water, how hot, what vessel and how long, then how the cup tasted and what you will change next. That is enough to repeat a good cup or fix a poor one. The blank record below takes about a minute to fill in, and it works for any tea because it holds your numbers and the package’s numbers instead of a fixed recipe.
A universal recipe would not help anyway. Twinings’ North American guide suggests 1 teaspoon of loose tea per 6-ounce cup, or 1 to 2 teaspoons per 8 ounces in a teapot, with water poured at the boil. The Kagoshima tea producers’ association lists regular sencha at 10 g for 5 cups, 80°C (176°F), for 1 minute. Those are different teas with different instructions, and your record starts from whichever one is printed on your package.
The first-brew record
Copy this table into a notebook or phone note. Fill in the “Package says” column first, then record what you actually did.
| Field | Package says | Cup 1 | Cup 2 |
|---|---|---|---|
| Date and time | Not applicable | ||
| Tea name, seller, best-by or lot | |||
| Leaf or bag amount (g or spoons) | |||
| Water amount (ml or oz) | |||
| Water source (tap, filtered, bottled brand) | Not applicable | ||
| Temperature or cooling method | |||
| Vessel and infuser | Not applicable | ||
| Steep time | |||
| Infusion number (first, second) | |||
| Additions (milk, sugar, lemon) | Not applicable | ||
| Strength, 1 to 5 | Not applicable | ||
| Bitterness, 0 to 5 | Not applicable | ||
| Drying mouthfeel, 0 to 5 | Not applicable | ||
| Aroma and flavor, in your own words | Not applicable | ||
| Would you repeat it? (yes, no, nearly) | Not applicable | ||
| One change for next time | Not applicable |
How to fill in each measurement
Leaf
Use a scale if you have one. Spoon measures work against you with loose tea, because a teaspoon of fine broken leaf and a teaspoon of large twisted leaf weigh different amounts. If you have only a spoon, write the spoon and whether it was level or heaped, and always use the same one. Tea bags are simple: write one bag and, if printed, the net weight per bag.
Water
A “cup” has no fixed size. Twinings’ cup above is 6 ounces, while a typical mug holds much more. Fill your mug to your usual level, pour that into a measuring jug once, and write the number on the inside cover of your notebook. Then record the water source too. A Cornell study found that the water used strongly changed how panelists rated green tea, and changed black tea only mildly (Franks et al., 2019).
Temperature
A thermometer gives the cleanest number, but a repeatable description works. “Boiled, poured straight on” and “boiled, poured into a cup first, then into the pot” are both good records. The second is the cooling step in ITO EN’s green tea method, which gives no degree figure. Consistency is the goal, so use the same words and the same vessels each time.
Time
Start the timer when water meets leaf and stop it when leaf and water separate. Write the actual time. If you walked away and came back at six minutes, record six; that is useful information. Time and temperature both move the cup. In a study of Turkish green tea, sensory scores peaked at 85°C for 3 minutes and fell sharply at 30 and 45 minutes because of bitter taste and dark color (Saklar et al., 2015). That result belongs to that tea and method, and it is here to show why a time note matters.
Second infusions
Some teas are steeped again from the same leaves. Kagoshima’s guide gives sencha just 10 seconds for the second brew. Give each infusion its own column, since a second cup is a different brew.
Rate taste in plain words
Keep the two sensations separate. Bitterness is a taste, felt on the tongue. Astringency is a drying, gripping feel in the mouth. Scores are personal, so a 3 in your notebook only compares with your other cups. Write your own flavor words, such as toast, grass or honey, instead of copying the package’s description.
A filled-in example
This example is fictional. It is not a test result or a recommendation for any tea.
| Field | Package says | Cup 1 | Cup 2 |
|---|---|---|---|
| Tea | Sample Black Tea | Same | Same |
| Leaf | 1 tsp per 8 oz | 2.5 g (1 level tsp) | 2.5 g (1 level tsp) |
| Water | 8 oz | 240 ml, filtered | 240 ml, filtered |
| Temperature | Boiling | Boiled, poured at once | Boiled, poured at once |
| Steep time | 3 to 5 min | 5 min | 3 min 30 s |
| Strength / bitterness / drying | Not applicable | 4 / 3 / 3 | 3 / 1 / 2 |
| Repeat? | Not applicable | Nearly | Yes |
| One change | Not applicable | Shorten the steep | None; repeat once to confirm |
Using the record
- Follow the package for cup 1. Without a baseline, you cannot tell what any later change did.
- Change one thing at a time. If you change time and leaf amount together, the record cannot say which one helped.
- Repeat a good cup once. A result you can reproduce is the one worth keeping.
- Keep the recipe line. When a cup earns a yes, copy its numbers to the front of the page beside the tea’s name.
Your next step is to copy the blank table and fill in the “Package says” column before you boil the water. The Beginner Brewing section and the wider Brewing Guides cover method, and if you enjoy keeping notes beyond the numbers, Tea & Journaling is the place for that. More starter topics sit in the Tea for Beginners hub.
Sources
- Twinings North America, How to Brew the Perfect Cup of Tea
- Kagoshima Prefecture Tea Producers Association, The Art of Brewing Delicious Kagoshima Tea
- ITO EN, Green Tea Classic Brewing
- Franks et al., The Influence of Water Composition on Flavor and Nutrient Extraction in Green and Black Tea, Nutrients, 2019
- Saklar et al., Effects of different brewing conditions on catechin content and sensory acceptance in Turkish green tea infusions, Journal of Food Science and Technology, 2015