Mushroom

In this context, mushroom refers to the common cultivated mushroom (Agaricus bisporus) as a processed ingredient — used in soups, sauces, gravies, and other prepared food products. This is the same species sold fresh as white button, cup, and flat mushrooms, or as brown varieties marketed as Swiss brown or cremini.

Agaricus bisporus is the most widely cultivated mushroom in the world, accounting for the majority of global mushroom production. Its mild, savoury flavour and ability to absorb surrounding flavours make it a versatile ingredient in processed foods. Mushroom is used in powdered, dried, canned, and paste forms across a wide range of commercial food products.

In Australia, fresh mushrooms are a major horticultural crop, with production concentrated in New South Wales, Victoria, Queensland, and South Australia.

Farmed Source
photograph to come — from twenty years of markets, farms and kitchens

How it's produced

Commercial mushrooms are grown indoors in purpose-built growing rooms or tunnels under carefully controlled conditions. The process begins with preparing a growing substrate — typically composted straw and animal manure — which is pasteurised to eliminate competing organisms. The compost is then inoculated with mushroom spawn (mycelium grown on grain) and covered with a casing layer of peat or similar material.

The growing rooms maintain precise temperature, humidity, and air flow to trigger fruiting. Mushrooms are harvested by hand over several flushes spanning a few weeks, after which the spent compost is removed and the room is cleaned for the next cycle. For use in processed foods, harvested mushrooms are sliced, dried, powdered, or canned depending on the application. The entire growing cycle from spawning to final harvest takes around eight to ten weeks.

What it costs the planet (per kilo)

Carbon ≈3kg
Freshwater ≈300L
Land ≈1

≈ Estimated from its category — typical for mushrooms, not measured for this item yet. Sources & methods →

Keeping it

Keep it: in the fridge in a paper bag.

In the freezer: 300–360 days (from date of purchase).

In the fridge: 3–7 days (from date of purchase).

Advice from Cubud’s own keeping notes — how to keep it, not a measured number.

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