How Black Mustard Oil is Made: Low-Temperature Extraction Process

The journey of authentic mustard oil begins long before the pressing machinery starts. From the fertile soil of Rajasthan to precision temperature monitoring, crafting pure unrefined oil requires meticulous care at every stage.

Here is an inside look at how [SIGO Hydraulic Cold Pressed Black Mustard Oil](/products/cold-pressed-black-mustard-oil) is manufactured in our certified facility in Phulera, Jaipur district.

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Stage 1: Seed Sourcing & Inspection

Great oil starts with exceptional seeds. We source mature native black mustard seeds (*Brassica nigra*) directly from heritage mustard-farming agrarian clusters across Rajasthan, including Alwar, Bharatpur, and Jaipur districts.

• Each lot undergoes stringent testing for oil content, seed maturity, and moisture levels (typically 6–8%).
• Raw seeds are inspected for zero argemone seed contamination to ensure 100% pure food safety.

Stage 2: Mechanical Seed Cleaning & Destoning

Before extraction, raw seeds pass through multi-stage mechanical cleaners:

1. Air Aspiration: Removes dust, dried chaff, and light impurities.

2. Vibratory Destoners: Removes small pebbles, soil particles, and field debris.

3. Magnetic Separators: Ensures zero metallic particles remain.

• Zero Chemical Washes: The seeds are cleaned purely through dry mechanical methods.

Stage 3: Hydraulic Cold Pressing Below 40°C

Once cleaned, whole black mustard seeds are loaded into the vertical hydraulic pressing cylinder.

• Unlike continuous expellers that generate high friction heat from rotating screws, our hydraulic press applies gradual, non-thermal mechanical force.
• Temperature sensors monitor the press continuously to guarantee that oil extraction stays strictly below 40°C.
• The freshly pressed raw oil flows gently down stainless steel collection channels.

Discover the pure result in [SIGO Black Mustard Oil](/products/cold-pressed-black-mustard-oil).

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Stage 4: Natural Settling & Sedimentation

Freshly extracted raw mustard oil contains microscopic natural seed fibers (mucilage and seed husk particles).

• Instead of using chemical degumming agents or high-speed centrifuges, we allow the raw oil to rest in food-grade settling tanks.
• Over 24 to 48 hours, heavier seed micro-particles settle naturally at the bottom through gravity.

Stage 5: Double Micro-Cloth Filtration

Once settled, the upper clarified oil passes through double-layer cotton micro-cloth filters.

• No chemical bleaching clays (Fuller's earth) are used.
• No synthetic filtering chemicals or chemical clarifiers are added.
• The double cloth filtration retains natural amber clarity while ensuring the oil remains 100% raw and unrefined.

Stage 6: Hygienic Bottling & Leak-Proof Sealing

The finished oil is packaged in sanitized food-grade bottles and cans:

• Available in 250ml, 500ml, 1 Litre, 2 Litre, and 5 Litre packs.
• Capped with tamper-evident induction seals to lock in the volatile essential aroma (*allyl isothiocyanate*) until it reaches your kitchen.
• Labeled with transparent batch numbers, packaging dates, and FSSAI certification details.

Explore our full range at [Hydraulic Cold Pressed Mustard Oil](/shop/mustard-oil).

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Frequently Asked Questions

Are any chemicals or preservatives added during processing?

No. SIGO Black Mustard Oil is 100% pure, unadulterated, and made without chemical solvents (hexane), preservatives, mineral oils, or synthetic colors.

Is the oil bleached or deodorized?

No. Chemical bleaching and deodorizing destroy natural aromas and nutrients. Our oil retains its authentic natural pungency, characteristic deep amber color, and fresh aroma.

Where is SIGO's production facility located?

Our extraction and packing facility is located at Village Junsya Kalan, Tehsil Phulera, Jaipur District, Rajasthan - 303602.