Assam CTC tea for bulk buyers: grades, blends and what to ask a supplier

CTC stands for crush, tear, curl. Instead of rolling the withered leaf whole (the orthodox method), the leaf passes through toothed rollers that cut it into small, dense granules. More surface area means the tea gives up its colour and strength in a minute or two of boiling — exactly what a milk-and-sugar chai needs.

Assam produces the bulk of India’s CTC. The Brahmaputra valley’s low altitude, heat and rainfall grow a leaf that is naturally malty, thick-bodied and high in colour. A well-made Assam CTC holds its backbone through milk; a light hill tea disappears into it.

CTC grades describe the size and shape of the granule after sorting, not the quality of the leaf. Two gardens can produce the same grade at very different cup quality, which is why sampling matters. From largest to smallest:

• BP (Broken Pekoe) — the largest CTC granule. Slower to brew, cleaner and brighter in the cup; adds body and appearance to a blend.
• BOP (Broken Orange Pekoe) — slightly smaller, well-twisted granules. A workhorse grade for loose-leaf retail packs.
• PF (Pekoe Fannings) — small, even granules with fast, strong extraction. The most common grade in Indian and Gulf-style chai blends and in tea bags.
• PD (Pekoe Dust) — very fine, dense grains. Brews almost instantly with deep colour, where strength per gram is the priority.
• Dust (D / CD) — the finest fraction. Highest colour and strength, shortest infusion; used in tea bags and very strong chai blends.

Buyers usually mean three things at once: liquor (colour and depth of the brew), briskness (a lively, slightly astringent bite) and body (the weight the tea keeps once milk goes in). A good CTC scores on all three; a cheap one gives colour but a thin, flat cup.

The practical measure is cup yield: how many cups your market makes from one kilo at the strength it expects. Finer, denser grades give more cups per kilo but a coarser mouthfeel — the trade-off a blender balances for you.

Almost no serious chai brand sells a single garden or a single grade. A blend combines two or more grades — say PF for strength with BOP for brightness and appearance — and leaf from several gardens, so the cup tastes the same whether the batch was made in March or October.

Tea is an agricultural product: first-flush, second-flush and rains-season leaf differ, and gardens vary year to year. A blender’s real job is consistency — tasting every lot, adjusting the recipe and rejecting leaf that does not fit. You are judging whether a supplier can hold a profile for years, not whether one sample tastes good.

Narsibapa Tea has blended Assam CTC in Morbi, Gujarat since the 1940s for a market that drinks its chai very strong (“kadak”), and every batch is brewed and tasted before it is packed. That discipline is what a bulk buyer pays for.

Ask for samples of the exact blend and brew them the way your customers drink tea — with milk and sugar if that is the market, not as a plain infusion. Compare against the tea you sell today: check the dry leaf for evenness and freedom from stalk and fibre, the infused leaf for a bright coppery colour, and the cup for colour, strength and a clean finish.

Then ask for a pre-shipment sample from the actual production lot before it is packed. Consistency between the approved sample and the shipment is the only thing that protects you once a container is at sea.

Moisture is the enemy of CTC. Tea is packed dry (typically well under 7 percent moisture) and, kept sealed and dry, holds its quality for a long time — 12 to 24 months is a typical shelf-life declaration, with the first months the freshest. Ask for the moisture value on the certificate of analysis.

Bulk CTC usually ships in multi-wall paper sacks with a food-grade inner liner (typical net weights 25 to 50 kg), palletised or loose-loaded in a container. Retail-ready packs — Narsibapa’s standard sizes are 250 g, 500 g and 1 kg — ship in export cartons; private-label packaging is available on enquiry.

These questions need no laboratory. The answers tell you whether you are talking to a blender or to a trader passing lots through.

• Which grades are in this blend, and why? A blender can explain the recipe.
• How do you keep the profile stable across seasons? Listen for tasting, lot rejection and multi-garden sourcing.
• Can I have a sample now and a pre-shipment sample from the production lot?
• What is the moisture at packing, and what does the certificate of analysis include?
• What is your packing setup — sacks, retail packs, private label — and is the facility FSSAI-registered?
• Which port do you ship from? Gujarat suppliers typically ship from Mundra or Kandla.