Herbal Tea and Kadha Manufacturing in India: A Guide
A herbal tea’s quality is judged in the cup, and the cut size and blend uniformity decide what ends up there. Specify cut, uniformity and brewing parameters. The immunity claims this category markets on are not available.
What Determines Cup Quality
This guide is for brand owners developing herbal teas, tisanes or kadha preparations in India.
The consumer judges this product by what comes out of the cup: colour, aroma, taste and strength after the recommended brewing. Everything in the specification exists to make that outcome consistent.
Two factors dominate. The first is cut size, meaning how finely the botanical material is cut or broken. A finer cut extracts faster and gives a stronger, darker brew in the same time; a coarser cut extracts more slowly. The same blend at two different cuts produces noticeably different cups.
The second is blend uniformity. A blend of several botanicals with different densities and particle sizes separates during handling, filling and transport. The result is that the first sachets filled from a batch and the last can carry different proportions, and a bulk pack poured by the consumer gives a different blend at the top than at the bottom.
Both are controllable, and both need specifying rather than leaving to the manufacturer’s judgment.
Specification Points
What belongs in your brief.
| Element | What to Specify |
|---|---|
| Each botanical by name | Botanical name, part used, and its own specification |
| Cut size per ingredient | So extraction is predictable |
| Blend ratio | By weight, with tolerance |
| Blend uniformity | Tested, with the method and sampling plan |
| Moisture | Maximum, since dried botanicals absorb it |
| Total ash and acid-insoluble ash | Maximums |
| Foreign organic matter | Maximum |
| Microbial limits | Per batch with pathogens, strictly |
| Heavy metals | Limits per batch |
| Pesticide residues | Per sourcing and market |
| Brew parameters | Water temperature, quantity and time |
| Brew outcome | Colour, aroma, taste against a reference |
| Packaging | Moisture and aroma barrier |
| Format | Loose, sachet, tea bag or granule, each specified |
Microbial limits deserve emphasis here. Dried botanical material carries microbial load, and while brewing with hot water reduces it, the product is sold as a dried blend and must meet its limits as supplied.
The Format Decision
Each brings different requirements.
Loose Blend
Cheapest to produce, and the consumer sees the ingredients, which supports a natural positioning. Blend separation in the pack is the main issue.
Paper Tea Bag
Convenient and dose-controlled, which removes the separation problem. Requires bagging capability and the bag material needs specifying.
Sachet of Loose Blend
Dose-controlled without bagging equipment, but the consumer must strain. Suits kadha preparations.
Soluble Granule or Instant
A different product entirely, made from extracts rather than cut botanicals. Different specification and different cost base.
Tea bags solve blend separation because each bag is filled individually, but they require the manufacturer to have bagging equipment and they introduce the bag material, thread and tag as components to specify. Confirm the bag material is appropriate for hot water contact.
Brewing Consistency
Test the way the consumer will.
- Define the brewing instruction precisely: water quantity, temperature and time.
- Prepare samples exactly to that instruction, not to a laboratory protocol.
- Assess colour, aroma, taste and strength against an approved reference.
- Test with hard and soft water, since water varies widely across India.
- Test at the water temperature consumers actually use, which may be below boiling.
- Assess a longer brew, since consumers over-brew and bitterness may develop.
- For kadha, assess the full simmering preparation if that is the instruction.
- Assess from the top and bottom of a bulk pack to check separation.
- Assess early and late sachets from the same batch.
- Repeat across stability time points, since aroma fades.
Claim Limits
Food framework, and this category tests it constantly.
A food product cannot claim to treat, cure or prevent any condition. That excludes immunity claims framed as preventing illness, cold and cough claims, digestion disorder claims, weight loss claims and detox claims as health outcomes.
Immunity is the dominant marketing theme for kadha and herbal tea products and the one most often overstated. Whether any immunity-related wording is available depends on your framework and the exact phrasing, and requires professional advice rather than market precedent.
Claims about specific botanicals’ traditional uses are not substantiation for a product claim, and literature about an ingredient does not transfer to your blend at your inclusion level.
Caffeine content should be declared accurately where present, and a caffeine-free claim needs to be true of every ingredient in the blend.
What remains available: accurate description, ingredient listing, the sensory experience, and traditional-use context only where permitted for your framework and worded as advised.
Development Checklist
Complete before commercial production.
- Specify each botanical by botanical name and part used.
- Specify cut size for each ingredient.
- Specify blend ratio by weight with tolerance.
- Require blend uniformity testing with a stated sampling plan.
- Specify moisture, ash and foreign organic matter maximums.
- Specify microbial limits with pathogens, per batch.
- Agree heavy metal and pesticide limits per batch.
- Choose the format and specify its components, including bag material.
- Define brewing instructions precisely.
- Assess the brew prepared exactly to those instructions.
- Test with hard and soft water and at realistic temperatures.
- Assess an over-brewed sample for bitterness.
- Check separation from top and bottom of bulk packs.
- Check early versus late sachets from one batch.
- Specify moisture and aroma barrier packaging.
- Require stability with sensory assessment at each time point.
- Declare caffeine accurately or verify any caffeine-free claim.
- Write a claim set excluding immunity, cold, detox and weight claims.
Developing a Herbal Tea or Kadha Range?
Share your blend, format and volume and our team will respond with specifications, cut options and documentation.
Frequently Asked Questions
What determines how a herbal tea tastes?
Cut size and blend uniformity. A finer cut extracts faster and gives a stronger, darker brew in the same time, so the same blend at two cuts produces noticeably different cups. Uniformity determines whether every serving carries the same proportions.
Why does blend separation matter?
Because botanicals of different densities and particle sizes separate during handling, filling and transport. The first and last sachets from a batch can differ, and a bulk pack gives a different blend at the top than at the bottom.
Do tea bags solve that?
Largely, because each bag is filled individually. They require bagging equipment and introduce the bag material, thread and tag as components to specify, and the bag material must be appropriate for hot water contact.
How should I assess the product?
Prepare it exactly as the pack instructs, not to a laboratory protocol, and assess colour, aroma, taste and strength against a reference. Test with hard and soft water, at realistic consumer temperatures, and assess an over-brewed sample for bitterness.
Can I make immunity claims?
A food product cannot claim to prevent illness. Immunity is the dominant marketing theme in this category and the most often overstated; whether any related wording is available depends on your framework and exact phrasing, and needs professional advice rather than market precedent.