How to Brew Loose-Leaf Tea in a Cafe: Ratios, Temperature and Timing
Loose-leaf tea is easier to serve consistently when the café controls three things: how much leaf goes into the pot, how hot the water is and how long the leaves steep. A single instruction such as “one spoon per cup” can vary with leaf size and spoon shape. Weighing the tea and recording the product’s recommended method gives staff a clearer starting point.
There is no one temperature or steep time for every tea. Green, black and oolong teas differ, and even two teas in the same family may need different preparation. Follow the supplier’s directions first, then taste the tea in the serving vessel and adjust the café recipe.
A practical brewing framework
Use a clean teapot or infuser, freshly prepared water, a scale or measured scoop, a timer and the correct serving cup. Keep the tea sealed in a cool, dry place away from strong odours. Heat only the water needed for the order or batch.
The UK Tea & Infusions Association suggests water around 90–98°C for black tea and about 80°C for green tea, while its brewing-time chart gives examples such as 2–3 minutes for jasmine green tea and 3–5 minutes for oolong. These are useful starting points. The tea pack’s instructions and the café’s own taste test should guide the final specification.
Tea style | Starting water guidance | Starting infusion guidance | What to check |
|---|---|---|---|
Black tea | Near-boiling, roughly 90–98°C | Often 3–5 minutes | Strength, bitterness and milk compatibility |
Green tea | Cooler, around 80°C | Often 2–4 minutes | Astringency, aroma and leaf quality |
Oolong | Product guidance; commonly between green and black tea ranges | Often 3–5 minutes | Roast level and repeated-infusion preference |
Herbal infusion | Use the supplier’s instructions | Varies by ingredient and cut | Whether the preparation requires a full boil or longer infusion |
The table is not a universal recipe. Leaf grade, cut, origin and supplier instructions affect extraction.
Write the recipe for service
Specify grams of tea per millilitre of water, water temperature, steep time, vessel and serving size.
For a test, use 3 g of leaf with 250 ml of water and compare a shorter and longer steep while keeping the other variables steady. This is a test design, not a universal recommendation.
Taste the tea plain before deciding whether milk, lemon or sweetener belongs in the menu drink.
For an iced serve, brew and chill a defined concentration, then test the finished dilution. A hot cup and a large iced cup may need different leaf amounts.
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Troubleshoot the cup
Tea tastes bitter or drying: check water temperature, steep time, leaf dose and whether the leaves remain in the pot after the timer. Change one variable at a time.
Tea tastes weak: weigh the leaf, confirm the water volume and check whether the infusion ended before serving. A larger cup may need a different dose.
Each staff member makes a different pot: replace household spoon measures with a gram specification and use the same timer and vessel.
Iced tea tastes diluted: calculate the final water and ice contribution. Test the drink at its normal service temperature, not just as a hot concentrate.
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Tea tastes stale: check package date, storage conditions and exposure to moisture or odours. Follow the supplier’s handling instructions.
Batch tea carefully
Batching can reduce wait time, but it introduces cooling, holding and contamination controls. Decide who prepares the batch, how it is labelled, where it is stored and how long the venue’s food-safety plan allows it to be held. Do not assign a shelf life based solely on an online recipe. If the café has not validated a batch process, brew to order or make a smaller batch under its local procedure.
For service, strain the leaves when the target time is reached. Leaving them in the pot continues extraction and can make later servings stronger or more bitter. If multiple infusions are part of the guest experience, treat each infusion as a separate timed preparation.
Common tea-service mistakes
Using the same boiling water for every tea can over-extract delicate leaves. Measuring by spoon can change the dose when leaves differ in size. Letting a tea bag or infuser sit in the cup after service makes the final sip unlike the first. Adding milk before tasting can hide the tea’s character. Finally, copying a temperature from a different supplier may produce a cup that does not suit the actual product.
Questions café teams ask
How many grams of loose tea should be used per cup?
Start with the tea supplier’s directions and the intended cup volume. Weigh the dose during recipe development so the café can repeat it.
Should green tea use boiling water?
Many green teas are brewed with cooler water than black tea, but the correct temperature depends on the product. Follow the supplier’s directions and taste.
Can loose tea be brewed ahead?
Only under a documented process that covers cooling, storage, sanitation and holding time. Local food-safety rules apply.
Is a longer infusion always stronger and better?
It will change extraction, but may also increase bitterness or astringency. Taste a controlled comparison.
Consistent tea service comes from matching leaf, water and time to the product. Write the approved method where staff can use it, then review the cup when the supplier or serving size changes.
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Written by: Riccardo Grechi | Beverage Manager, Bar Consultant & Trainer
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