How to Build a Rice Coated Peanut Production Process

Rice-coated peanuts are a traditional specialty food from the southern Fujian region (Minnan). The craft has been included in the intangible cultural heritage list. Its most distinctive feature lies in wrapping the peanuts in a thin layer of rice slurry before deep-frying, resulting in a unique taste characterized by a “thin and crispy crust, rich and intense flavor.”

Production Process Flow of Rice-Coated Peanuts

The manufacturing of rice-coated peanuts is a meticulous procedure that mainly comprises the following steps:

1. Raw Material Preparation & Treatment

Select plump, high-quality peanuts and premium rice. The rice must be soaked in clean water in advance until the grains fully absorb moisture and become soft, which facilitates subsequent grinding into slurry. The peanut kernels should be sorted to remove defective nuts and impurities; some processes also require roasting or frying the peanuts to enhance their aroma.

2. Preparing the Rice Slurry (Rice Paste)

This is the key step that determines the final product’s quality. Mix the soaked rice with clean water in the proper ratio and grind it into a fine, smooth rice slurry. In the tradition of intangible cultural heritage, it is particularly emphasized that the slurry’s consistency must be “just right,” relying entirely on the craftsman’s experience. If too thin, the coating will not adhere; if too thick, the coating becomes uneven. In the traditional Minnan method, a proprietary spice blend is also incorporated into the rice slurry for seasoning.

3. Coating (Enrobing with Rice Slurry)

Add the prepared peanut kernels into the rice slurry and stir thoroughly to ensure every peanut is evenly coated with a thin layer of rice slurry.

4. Deep-Frying

Heat the oil and carefully place the coated peanuts into the hot oil. Deep-frying is the core step that determines the final product’s crispiness; strict control of the oil temperature is required to achieve “frying without burning.” The speed of adding the peanuts and the frying time are critical. The operator must monitor the color change in time, removing the peanuts as soon as they turn golden brown and draining excess oil.

5. Cooling & Seasoning

Spread the fried rice-coated peanuts out to cool naturally to room temperature. After cooling, salt or other seasoning powders can be sprinkled as required. Finally, the product is packaged.

Main Equipment List

Depending on the production scale, equipment configurations may vary. Below are the key pieces of equipment needed for settings ranging from home workshops to industrial production:

Equipment Category	Equipment Name	Main Function / Remarks
Raw Material Processing	Soaking Tanks / Barrels	Used for pre-soaking rice and peanuts; mostly made of stainless steel to meet food hygiene standards.
Grinding Equipment	Rice Grinder / Mill	Core equipment for grinding soaked rice into fine rice slurry. For instance, the MaiBang M15 model (0.55–0.75 kW) can process 25–40 kg of dry rice per hour.
Mixing & Enrobing	Mixer / Coating Machine	Core equipment for grinding soaked rice into a fine rice slurry. For instance, the MaiBang M15 model (0.55–0.75 kW) can process 25–40 kg of dry rice per hour.
Frying Equipment	Automatic Frying Production Line	Semi-automatic: Electric or gas fryer with frying basket; manual feeding, stirring, and removal. Fully automatic: High output, integrates automatic feeding, frying, demolding, and oil draining. E.g., “Peanut Bar / Peanut Snack Equipment” with output of 100–120 kg/h, power 20–30 kW.
Cooling	Cooling Conveyor / Cooling Rack	After frying, products are cooled naturally or with forced air on this equipment to prevent moisture regain.
Seasoning	Seasoning Drum / Tumbler	Mixes peanuts with rice slurry to ensure even coating. It can be either a stainless-steel mixing tank or a dedicated enrobing apparatus.
Packaging	Packaging Machine	Used to evenly coat the cooled peanuts with salt, powdered sugar, or spice blends.

Key Notes & Critical Points

• Core Control Points: The consistency of the rice slurry and the oil temperature and frying duration are the decisive factors affecting the final coating effect and crispness.
• Equipment Selection: For small-scale production or startups, a stainless steel grinder, electric fryer, and simple mixing tank are sufficient. For mass production, investing in a fully automatic frying line and an automatic packaging machine is recommended to improve efficiency and product consistency.
• Food Safety: All food-contact parts of the equipment must be made of food-grade stainless steel, and a clean production environment must be maintained.