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CoolSteam® Black, a game-changing Nut Pasteurization and Roasting solution for Tree Nut Processors.

Laitram Machinery, a US-based pioneering leader in industrial equipment innovation, has reshaped the landscape of nut processing with its groundbreaking modular design pasteurization and roasting equipment. The cutting-edge technology, named Laitram CoolSteam® Black, presents a game-changing solution for continuous pasteurization, roasting, and brining of various tree nuts.


CoolSteam® Black all-in-one system eliminates the need for product handling between processing stages, ensuring absolute contamination prevention.



The Science Behind CoolSteam® Black's Success CoolSteam® harnesses Forced Convection, a principle akin to the rapid hot air circulation in an air fryer, to achieve efficient nut pasteurization and roasting. This approach ensures uniform temperature distribution, minimizing cold spots and enhancing heat absorption. The benefits are numerous:

  • Consistency: Forced convection guarantees even cooking throughout the product bed, producing uniformly pasteurized and roasted products. The CoolSteam design team utilizes computational software to optimize fan-generated airflow, ensuring comprehensive coverage and a crispy outer layer.

  • Faster Processing: The continuous hot air circulation accelerates both pasteurization and roasting processes, significantly reducing processing time compared to traditional methods.

  • Crisp, Moisture Neutral Texture: Forced convection aids rapid moisture evaporation, leading to the coveted crispy texture vital for achieving ideal crunchiness and flavor.


CoolSteam® Black boasts distinctive steps that make it the preferred choice for tree nuts pasteurizing and roasting:

CoolSteam® Black all in one system eliminates the need for product handling between processing stages, ensuring absolute contamination prevention.Photo - Laitram Machinery
CoolSteam® Pasteurization & Precision Roasting System with integrated Infraflow Briner. CoolSteam® Black all in one system eliminates the need for product handling between processing stages, ensuring absolute contamination prevention.

  • Preheating: A critical pre-conditioning step ensures tree nuts maintain their natural crunch and texture by gradually increasing product temperature, preventing internal or external condensation.

  • Pasteurization: Utilizing all-natural low-temperature steam. The CoolSteam pasteurization technology achieves a 5-Log Reduction of pathogens for a validated kill-step, rendering tree nuts safe for consumption.

  • Infraflow Briner: The integrated CoolSteam® Black Intraflow Briner, a one-of-a-kind briner, uniformly applies salt brine continuously, easily accommodating salted or unsalted products during the same process with no external product handling.

  • Precision Roaster: CoolSteam® Black's Precision Roaster utilizes forced convection for accurate drying or roasting, maintaining consistent results without over- or under-roasting.

  • Cooling stage ensures nuts are brought below 80°F, facilitating seamless retail or bulk distribution packaging.

Laitram Machinery's CoolSteam® Black represents a revolution in nut processing. With its modular design, comprehensive functionality, and reliance on Forced Convection principles, it delivers superior results in terms of consistency, processing time, texture, and flavor enhancement. The system's integration of preheating, pasteurization, brining, and precision roasting guarantees high-quality, safe, and delectable tree nut products. Embracing CoolSteam® Black translates into better control, flexibility, and food safety, ultimately contributing to a healthier snacking choice for consumers worldwide.


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