Keep a Brewed Rooibos Concentrate in a Sealed Jar and Label It With the Brew Date
A small jar of rooibos concentrate in the refrigerator makes building iced drinks during a busy service much faster than brewing to order each time. The concentrate is simply a stronger brew made with more tea per volume of water, then cooled and stored in a clean sealed jar. Labelling the jar with the brew date removes any uncertainty about how long the batch has been sitting. This guide covers the brew, the cooling process, the storage decision and how to dilute the concentrate correctly at the point of service.
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Brew a Stronger Concentrate Rather Than a Standard Cup
For a 500 ml concentrate, use 15 grams of loose rooibos or four to five standard rooibos tea bags in 500 ml of freshly boiled water. Steep for eight minutes, which is longer than a standard cup but appropriate for a concentrate that will be diluted later. Rooibos does not turn bitter with extended steeping the way black tea can, making it a forgiving base for this method. Remove the tea or bags promptly at eight minutes and do not squeeze the bags, which can cloud the liquid.
Cool the Concentrate Safely Before Refrigerating
Pour the hot concentrate into a clean heatproof jug and allow it to cool at room temperature. Do not place hot liquid directly into the refrigerator, as this raises the internal temperature and affects other stored items. Once the concentrate reaches room temperature, transfer it to a clean glass jar with a tight-fitting lid. Refrigerate promptly. The total time from brewing to refrigeration should not exceed two hours, or one hour if your kitchen is above 32 degrees Celsius.
Label the Jar With the Brew Date and Intended Use
Write the brew date clearly on a piece of masking tape and press it to the jar before placing it in the refrigerator. Include the word concentrate so anyone reaching for it knows it needs diluting. A simple label reading, for example, Rooibos Concentrate, Brewed Monday, removes ambiguity during a shared kitchen shift. Use the concentrate within three days of brewing and discard any remainder after that point. Do not rely on appearance or smell alone to judge whether it is still suitable.
Dilute to the Correct Strength at Service
A useful starting dilution is one part concentrate to one part cold water, poured over ice in a glass. This produces a drink with roughly the strength of a standard brewed cup. If you prefer a lighter result, move to one part concentrate and one and a half parts water. Measure both into the glass rather than estimating, especially during the first few uses of a new batch, so you can note the ratio that works for your taste and replicate it consistently across the service period.
Build an Iced Rooibos Drink Quickly From the Jar
Fill a tall glass with ice. Pour 120 ml of cold concentrate directly from the jar, then add 120 ml of cold water and stir briefly. The drink is ready in under a minute. For a slightly sweeter version, dissolve a small amount of sugar into the concentrate while it is still warm during the brew stage, before cooling, rather than adding it to the finished cold glass where it will not dissolve easily. This keeps the service step simple and the sweetness level consistent across multiple servings.
A little more
to know.
Does the concentrate need to be stored in glass rather than plastic?
Glass is preferable because it does not absorb colour or flavour from the brew. A food-safe plastic container with a secure lid is acceptable if glass is unavailable, but rinse it thoroughly before use to avoid any residual odours transferring to the rooibos.
Can the concentrate be frozen to extend its usable life?
Freezing is an option for extending storage beyond three days. Pour the cooled concentrate into a freezer-safe container, leaving space for expansion, and label it with the brew date. Thaw in the refrigerator and use within 24 hours of thawing.
Original editorial guidance and recipe formulations, not independently kitchen-tested. Times are estimates and depend on equipment and product directions. Cooked bases need additional cooling and refrigeration before cold serving. Images are AI-generated illustrations; appearance and yield may vary. Check actual ingredient labels, allergens, and any certification you require. We do not certify products. Read our approach.
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