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The Zojirushi RDS-400 is a commercial non-electric thermal rice warmer designed to hold cooked rice without powered heating. Its 4-liter capacity accommodates approximately 22 rice-cup measures, making it a compact holding solution for sushi bars, Japanese restaurants, catering operations, and other foodservice environments where cooked rice needs to remain warm away from an electrical outlet.

Unlike an electric rice warmer, the RDS-400 relies on thermal insulation rather than continuous heat. Zojirushi specifically designs the unit for acidic ingredients such as vinegar, making it particularly well suited to seasoned sushi rice. The stackable body conserves space during storage and transport, while a reusable condensation-collecting sponge in the lid helps manage moisture during holding.

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Pickup available at our Los Angeles showroom.
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  • $310.00 /each
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  • Model: RDS-400
  • Equipment type: Commercial thermal rice warmer
  • Capacity: 4.0 L
  • Rice capacity designation: Approximately 22.2 rice cups
  • Approximate servings: 44 servings of cooked rice
  • Power type: Non-electric
  • Heat retention: 176°F after 6 hours under manufacturer test conditions
  • Dimensions: 18-1/8"W x 15"D x 10-3/4"H
  • Construction / color: Stainless steel
  • Design: Stackable
  • Condensation management: Reusable and replaceable lid sponge
  • Sushi rice suitability: Compatible with acidic ingredients such as vinegar
  • Certification: ETL Sanitation listed
  • Country of origin: Japan
  • Applications: Sushi rice, cooked rice holding, catering, restaurant service, and off-site foodservice
  • Product type: Commercial non-electric thermal rice holding container for sushi rice and cooked rice

FEATURES

– Non-electric thermal design holds cooked rice without requiring an outlet
– Specifically suited to vinegared sushi rice and other acidic rice preparations
– 4L capacity provides commercial holding space for approximately 22 rice-cup measures
– Stackable construction saves space in kitchens, catering setups, and transport
– Lid-mounted reusable sponge collects condensation during holding
– Manufacturer-rated thermal performance retains 176°F after 6 hours under specified test conditions
– ETL Sanitation listed for commercial foodservice use
– Made in Japan