Sesame Seeds from Pakistan: Whiteness, Oil Content, and What Japanese and Chinese Buyers Actually Test For

Last October I sat across from a buyer in Karachi who'd just rejected a 24-ton container of white sesame because the whiteness reading came in at 91.3 instead of the 92 he'd contracted for. Less than one point. He still walked away.

That's the sesame business now.

I used to think sesame was a simple commodity — clean it, bag it, ship it. Then we started selling into Japan and Korea in 2021 and I realized I'd been thinking about this crop completely wrong. Pakistani sesame has quietly become one of the most interesting export stories nobody outside the trade talks about. We went from being a minor origin to shipping over 350,000 metric tons in a single season, with China alone taking the bulk of it.

But tonnage isn't the story. Specs are.

Whiteness Grades Aren't Marketing — They're Math

When a Japanese buyer asks for "94+ whiteness," they mean a Kett or Minolta colorimeter reading. Not a visual guess. Not what looks white under your warehouse tubelight. An actual instrument reading on a calibrated scale, taken from a representative sample after hulling or on the natural seed depending on the contract.

Here's the rough hierarchy we work with for Pakistan sesame seed export:

• Natural white sesame, 88-90 whiteness — this is your workhorse grade. China bakery, Middle East tahini blends, Turkish processors. Solid demand, predictable pricing.
• 91-93 whiteness — premium natural white. Korea takes a lot of this. Some Japanese confectionery too, depending on the season.
• 94+ whiteness — Japan's sweet spot for hulled and roasted applications. Tight specs, tight tolerances, and they will test every container.
• Hulled sesame (99%+ whiteness after dehulling) — a different product entirely. Sold to bakeries, sushi rice toppings, burger bun coatings.

And then there's the oil content question, which most first-time buyers don't even ask about until their processor complains.

Pakistani sesame typically runs 48-52% oil content. The good lots from Punjab — particularly around Layyah, Bhakkar, and parts of Khanewal — can push past 53%. That matters because if you're crushing for oil, every percentage point is real money. If you're a confectionery buyer, you actually want slightly lower oil because high-oil seed goes rancid faster on the shelf.

Nobody tells you this when you're starting out. You learn it when a buyer returns samples saying "FFA too high."

What Japan and China Actually Demand (They're Not the Same)

These two markets get lumped together and they shouldn't be.

China is volume. They want consistency, competitive pricing, fast shipping, and clean documentation. Their crushers and bakery suppliers run high-throughput operations and they need sesame seeds supplier Pakistan can deliver every month, not just at harvest. Moisture under 6%, FFA under 2%, admixture under 1%, aflatoxin under 10 ppb. Pretty standard stuff. They negotiate hard on price but they're forgiving on the cosmetic stuff if the lab results check out.

Japan is the opposite. Smaller volumes, much fussier specs.

A Japanese trading house will send you a 14-point inspection list before they even quote. They want pesticide residue panels (often the full positive-list system check, which is 300+ compounds), they want heavy metals, they want salmonella negative on roasted product, and they want documented traceability back to the district level. Honestly, I've had Japanese buyers ask which villages the lots came from. That's not a joke.

They'll also pay a real premium for it. White sesame seeds bulk going to Japan can fetch $200-400/MT over the China benchmark for the same harvest, if you can pass the specs.

The trick is — and this took me three seasons to figure out — you can't decide which market to ship to after the crop is harvested. You have to decide before. The fields that produce 94+ whiteness with low pesticide load need to be identified and contracted in May, not October. We work directly with about 60 growers in Punjab now, and roughly 40% of that volume is pre-allocated to Japanese and Korean accounts before the harvest even starts.

The Stuff Buyers Get Wrong

Few honest observations from the sell side:

Whiteness drops in storage. A lot tested at 93 in November might read 91 by March. UV exposure, humidity, oxidation. If you're buying for forward shipment, lock the whiteness spec at the time of loading, not at the time of contract.

Pakistani sesame isn't all the same. Sindh-grown sesame tends to be smaller-seeded, sometimes slightly off-white. Punjab gives you bolder seed, better whiteness, generally higher oil. Buyers who don't specify origin within Pakistan are leaving quality on the table.

Aflatoxin is the silent killer. I've seen exporters lose entire shipments because they didn't pull pre-shipment samples properly. The EU limit is 4 ppb for direct consumption, 8 ppb for further processing. Japan is similarly strict. We test before we even bring a lot into our warehouse.

Crop year matters more than people admit. 2023 was a strong whiteness year for Punjab. 2024 was patchy. 2025 looks promising on early sampling but it's too early to call definitively. Anyone quoting you a flat "Pakistan sesame" price without referencing crop year is either inexperienced or hoping you are.

The other thing I'd say to anyone sourcing from Pakistan for the first time — visit. Or at least video-call into the warehouse during loading. Watch the cleaning line. Look at the bags. Pull a sample yourself if you can get someone trusted on the ground. The exporters who don't want you looking are the ones you should be most curious about.

Is Pakistani sesame the cheapest in the world? No. Sudanese and Ethiopian product still undercuts us on certain grades. But on the combination of whiteness, oil content, and food-safety documentation for the higher-end Asian markets? I'd put Punjab against any origin and feel good about the comparison.

What's your buyer testing for — whiteness, oil, or residues? Because the answer changes everything about which lot we'd actually send you.