Portable grilling meets compact power, Iwatani Cassette Feu CB-AS-1 aims at campers

Edited by ad hoc news Flagship & Bestseller Desk. Reviewed before publication on 06/15/2026 at 4:35 PM ET. Details in the imprint.

Iwatani’s Cassette Feu CB-AS-1 tabletop gas stove sits at the center of the company’s consumer line-up in Japan, combining a slim cassette-gas design with a wide, low profile that appeals to campers and home entertainers alike. The portable burner is built around standard Iwatani butane canisters and a heat panel structure that helps maintain stable output even as gas pressure drops during cooking. According to Iwatani’s Japanese official product page, the CB-AS-1 delivers a rated heat output of roughly 3.5 kW, positioning it as a full-power tabletop unit rather than a minimalist backpacking stove. With its enamel-coated steel body and integrated windshield, it is marketed for indoor hotpot and tabletop grilling, but it is also widely used in Japan’s car-camping and outdoor cooking scene.

Flagship cassette stove built for grills and hotpot

The CB-AS-1’s defining feature is its wide, rectangular footprint, which accommodates Iwatani’s own plate-style accessories such as takoyaki pans and barbecue grills better than the more compact round-burner models in the Cassette Feu series. The burner is recessed into a flat top with a removable trivet, creating a stable platform for larger pots and pans that might wobble on narrower camping stoves. Iwatani highlights a safety-oriented design with an automatic shut-off mechanism that cuts the gas supply if abnormal pressure is detected inside the canister compartment, a feature inherited from other products in the Cassette Feu range and intended to address household safety concerns in Japan’s dense urban housing. Japanese retailer listings describe the body at roughly 12 to 14 inches wide and under 3 inches high, which keeps the flame close to the cooking surface and makes it easier to use on a dining table without blocking sightlines across the table.

In the home market, the CB-AS-1 is typically sold together with Iwatani-branded 250 g cassette gas canisters, with bundles often marketed for winter nabe hotpot season and summer balcony barbecues. Rather than chasing ultralight specifications, Iwatani focused on consistent flame performance at medium and high output, targeting users who want near-kitchen-level heat on a portable burner. Japanese consumer reviews on major online marketplaces praise the stove’s ability to sustain a strong flame for thicker cuts of meat on grill plates and for quickly bringing large pots of water to a boil. The enamel and coated surfaces are designed for easy wipe-down cleaning after use, which aligns with Iwatani’s intent to position the CB-AS-1 as an appliance that can live on the kitchen shelf, not just in a camping bin.

The cassette-gas format itself remains a key part of Iwatani’s strategy, linking its consumer stoves such as the CB-AS-1 with its broader liquefied petroleum gas and energy business. Because the stove uses the same standardized bayonet-style canisters as many of the company’s smaller burners, households that already stock Iwatani gas for emergencies or outdoor events can share fuel across devices. Safety guidance from Iwatani emphasizes correct canister installation, avoidance of oversized pots that block ventilation, and not operating the burner in enclosed, poorly ventilated spaces, reflecting longstanding Japanese norms around gas appliance safety. While the CB-AS-1 is mainly sold in Japan, the Cassette Feu line has distribution agreements in parts of North America, meaning that similar Iwatani-branded tabletop stoves are available to US consumers through specialty retailers and online channels even if this exact model designation is not always used domestically.

The stove’s positioning as a quasi-flagship tabletop unit in Iwatani’s consumer catalog is underscored by its presence across the company’s Japanese marketing and seasonal campaign materials. It complements Iwatani’s industrial and hydrogen segments by maintaining brand visibility in everyday household use, an area where the company has deep historical roots. Iwatani Corporation, listed on the Tokyo Stock Exchange with ISIN JP3272600002, last closed at JPY 3,330 on the TSE on 06/14/2026, according to Tokyo market data cited by financial portal Yahoo Finance Japan.

This article was a.i.-assisted and editorially reviewed. Product information without warranty; prices and availability may change at short notice. Not investment advice and not a buy or sell recommendation. Trading involves risk up to and including the total loss of invested capital.