Product guide
Orthosiphon aristatus
Whole cat's whiskers leaf — a light, green, gently bitter everyday infusion from Southeast Asia.
Botanical story · current research
Java tea is an upright tropical herb with serrated leaves and long white-to-lilac stamens that give the flower its cat’s-whiskers appearance. Orthosiphon aristatus belongs to the mint family and carries a fresh herbal aroma with a measured, pleasant bitterness. The leaf is the principal part dried for infusion.
Orthosiphon aristatus
Southeast Asia
Known as kumis kucing in Indonesia and used across Malaysia and Thailand, the plant belongs to Southeast Asia’s long herbal-drink tradition. The leaves are brewed as a light everyday infusion, often served warm or chilled in tropical weather. Citrus, mint or a little lemongrass can brighten its clean green profile.
Leaf · whole dried tea
Fresh leaves can be brewed soon after harvest, while dried whole or cut leaf is easier to store and measure. A moderate infusion keeps the cup fresh; excessive time or heat makes the natural bitterness more prominent. The form changes convenience, but the story remains centred on the leaf of Orthosiphon aristatus.
Latest useful research
We prioritise the newest credible source we can find and state clearly whether it is human, animal, laboratory or review evidence.
Network and molecular simulation study; clinical confirmation is needed.
Open the research ↗A study of an extract, cell or animal model is not the same as eating or drinking the plant. It can still be valuable evidence when described accurately.
From plant to kitchen
Flavour profile
How to prepare
Use 1–2 g (roughly a heaped teaspoon) per 250 ml at 90 °C.
Steep 5 minutes — longer pushes the bitterness forward without adding flavour.
A slice of lemon or a little lemongrass lifts the green profile.
Ways to use it
Java tea is a leaf infusion made from Orthosiphon aristatus, also described in many sources as Orthosiphon stamineus. It is a herbal infusion rather than tea from Camellia sinensis.
These names refer to the same plant in this guide. Cat’s whiskers describes the long flower stamens, while Java tea describes the use of its leaves as an infusion. Check the botanical name because common names can vary.
It is a leafy member of the mint family with upright flower spikes. Long stamens project beyond the pale flowers, giving the plant its cat’s whiskers name. The leaves are the part used for this tea.
Java tea has a documented history of traditional use, and researchers have investigated its leaf constituents. Traditional use and laboratory findings do not by themselves establish a clinical benefit from an everyday cup. The research section above explains the evidence and the preparation studied.
Use the leaf preparation directions below, then strain before drinking. The botanical name on the packet should match the plant described here.
Further watching & reading
Educational product information. Not medical advice. If you are pregnant, breastfeeding or taking medication, consult your doctor before using a new botanical product.
