Boop Goop — beveled orange wordmark on a comic sunburst

Koji · honey · yeast · slow fire

Cordyceps and lion's mane, fermented twice.

Koji opens the mushrooms. Honey and yeast take a second pass. A long, slow cook drives the alcohol off. More honey, slightly caramelized. That is the goop.

01

Koji extract

Cordyceps militaris and lion's mane, fruiting bodies, opened by Aspergillus oryzae.

02

Honey & yeast

A secondary ferment. The extract lives again. Nucleosides keep moving.

03

Slow cook

Alcohol leaves. The work of the ferment stays. No still as the main event.

04

Caramel honey

More honey, taken just to caramel. Thick on purpose. That is the goop.

The bottle

One goop. Two sizes.

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Boop Goop koji extract

2 fl oz / 59 ml

Boop Goop

$48.00

Koji extract of cordyceps and lion's mane. Honey. Yeast. Slow fire.

Details
Boop Goop koji extract

4 fl oz / 118 ml

Boop Goop

$86.00

Koji extract of cordyceps and lion's mane. Honey. Yeast. Slow fire.

Details

Why take it

Fermented cordyceps, then the mane.

The bottle is built around fermented cordyceps — stamina, oxygen, immune tone — with lion's mane for the head that has to stay with the day.

The emphasis

Fermented cordyceps

Cordyceps militaris

Cordyceps is already a stamina mushroom. Fermenting it is the difference between hoping your gut can open a chitin wall and handing that job to koji and yeast first. Cordycepin and adenosine — the nucleosides this fungus is famous for — are easier to meet once the cell wall is gone.

  • Energy that is not coffee

    Cordyceps has a long traditional use for stamina, oxygen use, and the kind of tired that sleep does not fix. Cordycepin and adenosine sit in the same family of molecules the body uses to talk about energy. People reach for it before a walk, a shift, or a day that asks more than usual.

  • Why fermented is the point

    Raw cordyceps powder still has to be digested. Koji secretes cellulases, proteases, and β-glucosidase that take the wall apart. The honey-and-yeast secondary ferment keeps transforming those nucleosides. A fermented C. militaris beverage, in a controlled eight-week trial in healthy adults, was associated with higher natural-killer cell activity and lower selected inflammatory cytokines — without a safety-lab signal. That is not a cure. It is a reason fermentation is not a flavor trick.

The other half

Lion's mane

Hericium erinaceus

The cascade mushroom. Fruiting-body hericenones are the compounds researchers study for nerve-growth-factor pathways. If cordyceps is the fire, lion's mane is the mind of the bottle.

  • Focus and nerve support

    Traditionally taken for memory, clarity, and the long work of the nervous system. Modern research follows hericenones (in the fruiting body) and erinacines (more often in mycelium) for their relationship to nerve growth factor. We use the fruiting body — the mushroom you can see.

  • Opened by koji

    Lion's mane is mostly water and a stubborn wall. Koji's enzymes are why this is a goop and not a weak tea. The same ferment that serves cordyceps serves the mane: one koji bed, two species, then honey and yeast.

The full write-up — fermented cordyceps first — is on the benefits page.

Steamed rice covered in a snow-white koji bloom

The method

Enzymes, then yeast, then fire.

Koji is the first worker — the mold behind miso and sake. Honey and yeast are the second. The cook is the third: alcohol leaves, honey caramelizes, the goop remains.

Read the method