Prevalent Builds a Carbon-Neutral Yakitori Bar from Mycelium, Pineapple Fiber, and Dust

Most restaurant fitouts treat sustainability as a line item: reclaimed timber here, a low-VOC paint there, a paragraph on the website. Prevalent, the practice led by Benjamin Berwick and Joshua Healey, treated the specification for Âpé Yakitori Bar as something closer to a venture fund. Every material dollar was directed toward early-stage fabricators developing carbon-negative products, from mycelium grown on agro-industrial waste to cellulose fiber extracted from discarded pineapple leaves to stone manufactured from dust. The result sits inside a generic early-2000s tenancy shell on Newcastle's Broadwalk, glowing sodium-orange against the harbor.

What makes the project genuinely interesting is not the green credentials alone but how the architects weaponized economy. Rather than concealing the shell's exposed wires, pipes, and paint with plasterboard and suspended ceilings, a move that would consume material only to hide the building's reality, they left everything visible. The budget that would have gone to concealment instead funded bioremediation and circular-economy materials. The restaurant is both a dining room and a material catalog, each surface a proposition about what construction could look like if architects stopped spending money on pretending buildings are something they are not.

Sodium Glow and the Ainu Hearth

The dominant spatial gesture is a set of large, curved luminous forms that hang below the raw concrete ceiling and bathe the dining room in a deep amber light. Prevalent cites two references: the traditional Ainu Japanese hearth, where the fire at the center of the home organizes all domestic life, and the sodium lamps that line Newcastle's industrial harbor. The color is specific and unapologetic. It pulls the room away from the neutral-gray hospitality palette that has colonized every waterfront restaurant in Australia and instead insists on atmosphere with an almost theatrical conviction.

Beneath that glow, the open kitchen occupies the center of the plan. Chefs cook over charcoal in full view of bench-style seating and front-row grill counter seats, collapsing the distance between preparation and consumption. The hearth analogy is literal: fire sits at the heart of the room, and everything radiates outward from it.

Leaving the Shell Alone

The existing autoclaved aerated concrete walls were lightly sanded or simply left in their found state. Paint residue, rust marks, and service runs remain visible, treated not as defects but as the honest surface of a building that has already been built. This is not the curated rawness of an industrial-chic cocktail bar. It is closer to a principled refusal: covering these surfaces would require new material, new labor, and new embodied carbon, all to produce a fiction of newness.

The strategy exaggerates the proportions of the tenancy shell. Without drop ceilings or wall linings compressing the volume, the room reads as taller and wider than you expect from a standard commercial lease. The glowing ceiling forms float within that volume like autonomous objects, synthesizing lighting, acoustics, and spatial definition into a single element rather than distributing those functions across separate systems.

A Material Catalog at Every Surface

Look closely at the junctions and you begin to read the project as a sampler of next-generation materials. Textured cream panels, made from mycelium acoustic panels grown on agro-industrial residues, meet distressed concrete walls marked with rust. Carbon-neutral stone, produced from mineral dust, abuts rubberwood counter surfaces. Each material announces its own texture and origin without blending into a homogeneous finish.

The detailing is deliberately legible. Where conventional fitout detailing aims for seamless transitions, Prevalent allows gaps, reveals, and visible fixings so you can distinguish one material system from the next. The wall becomes a teaching tool, or at least a provocation: these materials exist, they perform, and they sequester carbon. Why aren't they everywhere?

Bar and Counter as Material Argument

The bar counter is where the project's material ambitions are most concentrated and most public. Rubberwood surfaces sit below horizontal concrete shelving, with a curved illuminated soffit overhead repeating the amber glow at a more intimate scale. Chrome beer taps catch light against a textured metal panel backdrop that reads as almost geological in its layering.

The circular light fixture above the central counter acts as a smaller echo of the dining room's major ceiling forms, compressing the same spatial logic into a single focal point. Customers sitting at the black metal stools are positioned directly under it, wrapped in the same sodium warmth. The effect is campfire-simple: gather around the light.

Details and Exposed Systems

A stainless steel faucet against pineapple-leaf cellulose panels. A horizontal black pipe running along a rubberwood countertop. Exposed brick meeting a patinated metal panel in afternoon light. These details are not incidental; they are the project's argument made physical. Every junction is a confrontation between what was already there and what Prevalent chose to introduce, and the introduced materials carry a story about waste streams, biofabrication, and carbon accounting that the existing shell never could.

Plans and Drawings

The floor plan reveals a straightforward linear organization: rows of communal bench seating fill the dining hall, with the open kitchen and grill running along one edge and the bar occupying a compact zone to one side. Service areas are pushed to the perimeter. The simplicity is the point. Within a 200-square-meter lease that offers almost no spatial complexity, the architects had to rely entirely on material and light to differentiate the experience from the generic shell that contains it.

Why This Project Matters

Âpé Yakitori Bar proposes a model in which the design specification is itself a form of activism. By directing project budgets toward carbon-negative material startups, Prevalent turns a small hospitality fitout into seed funding for bioremediation and circular-economy research. The idea is scalable in a way that signature architecture rarely is: any architect, specifying any project, could make similar choices. The barrier is not technology or cost but willingness to abandon the concealment reflex that drives most commercial interiors.

The project also demonstrates that carbon-neutral materials are not a sacrifice. The room is moody, specific, and atmospheric. It does not look like a sustainability demonstration. It looks like a yakitori bar that happens to be built from mushrooms, pineapple leaves, and dust, and that confidence in the finished product may be the most persuasive argument the project makes.

Âpé Yakitori Bar, designed by Prevalent (Benjamin Berwick, Joshua Healey), Newcastle, Australia. 200 m², completed 2022. Photography by Jan Vranovský.

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