Makhana Suta Grading Guide (3 Suta to 6+ Jumbo)

Q: What does Suta mean in Makhana grading?

In the traditional agricultural mandis of Bihar and Mithilanchal, 'Suta' (सूत) is a customary unit of linear measurement equal to 1/8th of an inch (approximately 3.175 millimeters). In Makhana processing, it designates the diameter threshold of the wire-mesh sieve used to calibrate popped lotus seeds. For example, 6 Suta corresponds to roughly 19-22mm diameter, while 6+ Suta Jumbo exceeds 22-26mm.

Q: What is the difference between 5 Suta and 6 Suta Makhana?

Grade 5 Suta (16-19mm) is the commercial standard for FMCG roasting and consumer retail pouches, offering great crunch, uniform puff, and high value. Grade 6 Suta (19-22mm) and 6+ Jumbo (22-26mm+) represent top-tier premier nuts with maximum kernel expansion, cloud-like lightness, pristine white color, and premium shelf appeal for luxury gifting and global export.

Q: Which Suta grade is ideal for commercial roasting and flavoring?

For industrial roasting lines and flavored snack pouches, Grade 5+ Suta is widely preferred. Its uniform diameter ensures consistent heat transfer and prevents scorching, while absorbing seasoning slurries (olive oil, ghee, peri-peri, cheese) evenly across the batch.

Q: What is the acceptable moisture content for export-grade Makhana?

Export-grade Mithila Makhana must maintain a moisture content below 7.5% to 8.0%. Keeping moisture below this threshold preserves peak crispness, prevents microbial or fungal spoilage during ocean transit, and guarantees a 12-month shelf life under sealed barrier packaging.

Q: How is Makhana graded in Darbhanga, Bihar?

Makhana grading involves a 6-stage physical protocol: wetland pond harvesting, natural sun-drying, wood-fire roasting, manual mallet (thapi) popping, mechanical multi-deck sieve calibration, and optical sorting to remove charred shells, unpopped kernels (guri), and broken halves.

Authentic Mithila Cultural Heritage

पग-पग पोखरि, माछ-मखान,
मिथिला के माटी, बिहार के शान।
स्वाद में अपनापन, गुणवत्ता में मान,
बिहारी मखाना — बिहार के पहचान!

Procured directly from the certified wetland districts of Darbhanga, Madhubani, and Supaul under the official Mithila Makhana Geographical Indication (GI Tag No. 696).

Traditional Suta Rule: 1 Suta (सूत) = 1/8th Inch = 3.175 mm Multi-Deck Brass Sieve Calibrated

INTERACTIVE BENCHMARK

Interactive Suta Visualizer & Calibrator

Click across the grades below to inspect precise millimeter diameter, sieve gauge number, kernel density, and commercial yield parameters.

GRADE 6+ LAVA JUMBO

22 - 26 mm

Jumbo Lava Sphere

0mm 10mm 20mm 30mm

Calibrated on 7 Suta Brass Mesh Sieve

SUPREME EXPORT GRADE FSSAI & APEDA Export Compliant

Grade 6+ Suta (22mm - 26mm+ Jumbo)

The undisputed sovereign of popped lotus seeds. Handpicked extra-large kernels featuring maximum puff expansion, cloud-like crispness, and zero hard core. Chosen by luxury gourmet snack brands and high-end supermarket retail packaging.

KERNEL DIAMETER 22mm – 26mm+

SIEVE JALI MESH 7 / 7+ Suta Gauge

MOISTURE LIMIT ≤ 7.2%

HARD KERNEL / GURI < 0.2%

EXPANSION RATIO 99.5% Full Puff

MASTER PACK 10 Kg 5-Ply Box

Request Wholesale Quote for Grade 6+

INDUSTRY KNOWLEDGE

Understanding the "Suta" Measurement in Makhana

In India's agro-commodity markets — especially in Darbhanga, Madhubani, and Patna — lotus seed processors do not measure popped kernels in millimeters. Instead, they calibrate using Suta (सूत), a centuries-old imperial fractional unit where:

1 Suta = 1/8 Inch = 0.125 inches = 3.175 mm

During mechanized sorting, popped makhana passes through a series of inclined vibrating decks fitted with round perforated brass or stainless-steel sheets. The holes on these sieves correspond to exact Suta dimensions:

6+ Suta Sieve: Screen holes of ~22mm. Only oversized king kernels remain on top.
5 Suta Sieve: Screen holes of ~18-19mm. Retains uniform FMCG roasting kernels.
4 Suta Sieve: Screen holes of ~14-16mm. Allows smaller culinary and flour nuts to separate.

Why Suta Uniformity Matters to Roasters

For commercial brands and snack manufacturers, batch uniformity is critical for consistent quality:

Uniform Thermal Roasting:

Mixed-size kernels scorch small nuts while larger nuts remain chewy. Calibrated Suta ensures 100% even roast color and crispness.

Predictable Seasoning Absorption:

Consistent surface area per nut allows seasonings, olive oil, and herbs to distribute evenly without clumps or flavor drop-off.

Pouch Volume & Density Control:

Automated multi-head weighers pack by volume and weight. Calibrated Suta prevents pouch underfills and carton crushing.

SMART GRADE FINDER

Find the Right Suta for Your Business

Select your primary business model or production goal to get our master recommendation on Suta size, carton packing, and estimated bulk yields.

Select Your Commercial Application:

RECOMMENDED GRADE

Grade 5+ Suta (16-19mm Standard)

Optimal for commercial continuous roasting ovens. Delivers maximum crunch, uniform seasoning pickup, and appealing pouch volume at competitive procurement costs.

Master Carton: 10 Kg Double-Wall Corrugated

Moisture Target: ≤ 7.5%

Inquire for This Recommended Grade

Master Makhana Suta Calibration Matrix

Laboratory physical parameters and tolerance metrics calibrated at our Darbhanga facility.

Full Lab Specifications & HS Codes

Grade Designation	Suta Equivalent	Diameter (mm)	Expansion Volume	Moisture (%)	Broken Tolerance	Primary Commercial Use	Standard Packaging
Grade 6+ Lava Jumbo	`7 / 7+ Suta`	22mm – 26mm+	≥ 99% Oversized Sphere	≤ 7.2%	< 0.2%	Gourmet retail pouches, corporate gifting, luxury export	10 Kg Master Carton (Barrier Poly)
Grade 6 Suta Export	`6 / 6.5 Suta`	19mm – 22mm	≥ 98% Fluffy Kernel	≤ 7.5%	< 0.5%	Export to USA, UAE, UK, premium roasted FMCG lines	10 Kg Master Carton / 500 Kg Pallet
Grade 5+ Suta Standard	`5 / 5.5 Suta`	16mm – 19mm	≥ 97% Uniform Puff	≤ 7.8%	< 1.0%	High-volume snacking, flavored seasonings, supermarket brands	10 Kg Master Carton / 15 Kg Bag
Grade 4+ Suta Handi	`4 / 4.5 Suta`	13mm – 16mm	Crunchy Compact Nut	≤ 8.0%	< 2.0%	Namkeen mixtures, chivda blends, traditional gravies, kheer	15 Kg HDPE Woven Bags with Liner
Grade 3 Suta & Micronized Flour	`< 3.5 Suta`	100 Mesh Ultra-Fine	Milled Powdered Seed	≤ 6.5%	N/A (Milled)	Gluten-free baking, infant porridge, protein supplements	5 Kg Vacuum Sealed / 25 Kg Drums

SEED TO PUFF JOURNEY

From Wetland Harvest to Precision Sieving

The craft of popping Euryale Ferox seeds requires centuries of inherited expertise from Mithila's Mallah community combined with modern sorting technology.

STEP 1

Wetland Deep-Pond Harvest

Harvesters dive into perennial mud ponds across Darbhanga and Madhubani to gather spiny seed pods using traditional bamboo sweeps (Ganj).

STEP 2

Sun Drying & Moisture Stabilization

Black raw seeds are washed in clear water and sun-dried on clean mats until internal moisture stabilizes to the optimal popping threshold (~12-14%).

STEP 3

Wood-Fire Embers & Mallet Cracking

Seeds are roasted in earthen pots over wood embers, then swiftly struck with a wooden mallet (Thapi) on a wooden anvil to explosively pop the kernel.

STEP 4

Multi-Deck Mechanical Sieve Sorting

Popped makhana is fed into multi-deck vibration screens to rigorously separate 6+ Suta Jumbo, 6 Suta, 5+ Suta, and 4+ Suta fractions.

STEP 5

Manual & Optical Defect Removal

Trained inspectors eliminate unpopped hard seeds (Guri), charred fragments, and broken kernels to guarantee < 0.2% defect rates.

STEP 6

Moisture Analyzer & Poly Packing

Verified by halogen moisture analyzers (≤ 7.5%) and sealed into heavy-duty LDPE barrier bags inside 5-ply corrugated export cartons.

FREQUENTLY ASKED QUESTIONS

Makhana Suta Grading & Procurement FAQs

Clear technical answers to help institutional buyers and distributors select the ideal grade.

In traditional agricultural markets of Bihar, "Suta" (सूत) is an imperial fraction equal to 1/8th of an inch (3.175 mm). In the makhana industry, sieves with perforations measured in Suta are used to sort popped nuts. For instance, 6 Suta refers to roughly 19-22mm diameter nuts, while 6+ Suta Jumbo exceeds 22-26mm.

Grade 5+ Suta (16-19mm) is the commercial industry standard for packaged snacks and daily consumption, offering superior crunch, high volume, and great economics. Grade 6+ Suta Jumbo (22mm+) consists of handpicked giant spherical puffs with pristine ivory appearance, maximum expansion, and cloud-like lightness — commanding a premium for luxury gift packs and top-tier global export.

Uncalibrated nuts of varied diameters result in uneven roasting: smaller nuts scorch before larger ones achieve crunchiness. Standardizing on Grade 5+ or Grade 6 ensures uniform heat conduction through continuous rotary roasters, and ensures seasonings (peri-peri, sour cream, cheese, himalayan pink salt) adhere evenly to every kernel.

All export-grade Makhana shipped by Bihari Makhana is calibrated to maintain a moisture level strictly below 7.5% - 8.0%. This guarantees optimal crispness, prevents moisture migration during container ocean shipping, and delivers a stable 12-month shelf life.

Yes. At our Darbhanga processing facility, we accommodate custom sieve setups for institutional buyers, including tight tolerances like 5.5 to 6 Suta, bespoke 100% white optical grading, private labeling, or nitrogen-flushed retail pouch packing.

Ready to Procure Calibrated Mithila Makhana?

Direct wetland provenance from Darbhanga, Bihar. Request a formal quotation or order a sample evaluation kit delivered anywhere in India or worldwide.

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