Organic Tempeh Starter Culture 10g

~~$19.95 AUD~~ $14.95 AUD

Choose express shipping to ensure your culture arrive quickly and maintain its quality for the best results! What is Tempeh? Tempeh is a fermented plant-based, vegan protein—typically a cultured soybean cake...

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Vendor: Nourishme Organics SKU: N/A

Choose express shipping to ensure your culture arrive quickly and maintain its quality for the best results!

What is Tempeh?

Tempeh is a fermented plant-based, vegan protein—typically a cultured soybean cake or other types of legumes—that has been a staple in Indonesia for centuries. The fermentation process allows the proteins within the food to be more easily digested and degrades anti-nutrient compounds. In its finished form, tempeh can be baked, steamed or grilled.

Tempeh has prebiotic and probiotic properties.

Absorption: Eating fermented foods aids in the absorption of other nutrients.
Balance: Fermented foods help our guts balance the good bacteria with the not-so-good bacteria.
Digestion: Fermented foods help aid digestion.
Enzymes: Fermented foods are rich in enzymes, the building blocks of protein. Enzymes are the catalysts for breaking down food during digestion.

Usage: 10g of Organic Tempeh Starter Culture will make up to 5 kg of Organic Tempeh using Organic Non GMO Soybeans

Culture Composition: Rhizopus oligosporus

How to Make Tempeh

TEMPEH — TROUBLESHOOTING GUIDE

Loose, patchy, or not binding at all? Here's how to read your block.

Tempeh depends on a live mould culture binding cooked beans into a firm cake over 24–48 hours — and small missteps in moisture, temperature or packing show up clearly in the result. This guide walks through the eight places things most often go sideways, what's usually causing it, and what to do about it.

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Starter & culture

Tempeh depends on a live Rhizopus oligosporus culture — its condition sets the ceiling for everything downstream.

My batch never grew any mould at all

WHAT'S HAPPENING

Before troubleshooting temperature or moisture, rule out the starter itself — potency drops if it's old, was stored somewhere warm, or has been open a long time.

TRY THIS

Test with a small batch using a fresh, unopened starter. If that grows normally, the previous starter had lost viability. Keep starter in the freezer between uses to preserve potency for longer.

How much starter should I use, and does distribution matter?

WHAT'S HAPPENING

Too little starter, or starter that isn't spread evenly through the beans, leads to patchy growth — some areas fully bound, others still loose.

TRY THIS

Follow your recipe's stated ratio (commonly around 2g of powdered starter per 500g dry beans) and mix thoroughly through the cooled beans rather than sprinkling on top, so every bean gets contact with spores.

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Bean prep

This is where most failed batches actually go wrong, even though the problem doesn't show up until fermentation.

My beans are too wet and the tempeh turned out slimy or foul-smelling

WHAT'S HAPPENING

Excess surface moisture is one of the most common causes of a failed batch — damp beans favour bacterial growth over the mould culture, which can turn the batch slimy and unpleasant-smelling rather than binding cleanly.

TRY THIS

After boiling, drain thoroughly and spread beans on a clean towel to dry for 20–30 minutes before inoculating, patting them down if needed. They should look and feel dry on the surface, not glistening.

Some of my beans didn't ferment at all, even though most of the block looks fine

WHAT'S HAPPENING

Under-cooked beans resist mould growth — the culture needs fully softened beans to establish properly, and any that are still firm inside can end up as unfermented patches.

TRY THIS

Cook beans until soft all the way through but not mushy — test a few from different parts of the pot before draining. If a batch comes out patchy, a longer secondary ferment at room temperature can sometimes recover the affected beans.

Do I need to remove the hulls?

WHAT'S HAPPENING

Hulls and skins can physically block the mould from binding beans together into a firm cake, especially where they cluster.

TRY THIS

Use split, dehulled beans if possible (dehulled soybeans or split beans like chickpeas or lupin work well), or rub whole cooked beans between clean towels to loosen and remove as many skins as you can before draining them off.

Do I need to add vinegar, and does it matter if I skip it?

WHAT'S HAPPENING

A small amount of acid (commonly vinegar) mixed through the beans before inoculating helps suppress unwanted bacteria, giving the mould culture a cleaner environment to establish in.

TRY THIS

Stir vinegar through once the beans have cooled to below body temperature — adding it while still hot can affect the culture. Don't skip this step even if a recipe treats it as optional; it meaningfully lowers the risk of off batches.

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Inoculation & packing

How you pack the beans shapes airflow, moisture, and how evenly the mould can bind the block.

My tempeh is thick with mould on the outside but loose or unbound in the centre

WHAT'S HAPPENING

A block that's too thick, or packed too densely, traps heat and moisture in the middle, which can stop mould penetrating fully even when the outside looks completely covered.

TRY THIS

Keep blocks to around 2–3cm thick, and pack beans firmly but not compressed. For larger batches, use multiple thinner bags or trays rather than one large thick block.

My mould growth is patchy, with some loose beans that never bound together

WHAT'S HAPPENING

Air gaps from loose packing stop the mould's fine threads from bridging between beans, so patches separated by gaps can be left unbound even in an otherwise successful batch.

TRY THIS

Press beans into the mould, bag, or tray firmly and evenly, tapping out air pockets, without compacting them so hard that airflow through perforations is blocked.

What container should I use, and how do I get the holes right?

WHAT'S HAPPENING

Rhizopus needs airflow to thrive, but too much ventilation dries the surface out before the mould can establish, and too little encourages condensation and bacterial growth instead.

TRY THIS

Perforated plastic bags, banana leaves, or a tray covered with foil punched every couple of centimetres all work. Aim for small, evenly spaced holes rather than a few large ones, and wipe away any condensation that collects on the inside of the bag partway through.

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Temperature & humidity

Tempeh needs a narrower, more stable environment than most home ferments, and it generates its own heat as it goes.

How do I hold a steady incubation temperature?

WHAT'S HAPPENING

Rhizopus grows best in a fairly narrow band, roughly 28–32°C, over 24–48 hours — cooler and growth slows or stalls, hotter and the culture can be damaged.

TRY THIS

A dedicated incubator, yoghurt maker with a wide enough chamber, or an oven with just the light on (oven switched off) all work. Check actual temperature with a thermometer rather than trusting a dial, and monitor for day/night swings in the room.

The block feels warm to the touch partway through — is that normal?

WHAT'S HAPPENING

Active fermentation generates its own heat, and a thick or tightly packed block can push its internal temperature meaningfully above the surrounding air.

TRY THIS

Some warmth is expected, but if it feels distinctly hot rather than warm, move it somewhere slightly cooler or increase airflow around it to prevent the culture from overheating, especially in the second half of fermentation.

My beans dried out and mould growth stalled

WHAT'S HAPPENING

Low humidity around the ferment can dry the surface faster than the mould can establish, particularly in an open tray setup.

TRY THIS

Cover trays more fully, incubate in a slightly more enclosed space, or place a damp (not wet) cloth nearby to lift ambient humidity without adding moisture directly to the beans.

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Mould growth

Knowing what healthy mould growth looks like at each stage takes the guesswork out of judging a batch.

What does normal, healthy mould growth actually look like?

WHAT'S HAPPENING

Healthy tempeh starts with fine white, cottony growth that thickens and binds the beans into a firm cake. Later in fermentation, grey or black patches can appear across the surface as the mould begins to sporulate — this is a normal, expected stage, not a fault.

TRY THIS

Judge readiness by firmness and how fully the cake holds together when you lift it, not just colour. A block that's uniformly white and firmly bound is ready; grey-black patches later on are fine to eat, just slightly stronger in flavour.

My block isn't fully covered after 48 hours

WHAT'S HAPPENING

Incomplete coverage after the expected time usually traces back to one of three things: uneven starter distribution, a block that's too thick, or a temperature that's been running cool.

TRY THIS

Give it more time in a warm spot before giving up — an extra 6–12 hours often recovers a slow batch. If it's still patchy after that, work back through starter freshness, bean dryness, and packing thickness for your next attempt.

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Is it safe? Reading the signs

Because tempeh is meant to be covered in mould, telling a good batch from a bad one takes a bit of familiarity.

How do I tell a normal smell from a spoiled batch?

WHAT'S HAPPENING

Properly fermented tempeh has a pleasant, earthy, mushroom-like smell. A sharp ammonia smell, or a genuinely foul or rotten odour, points to bacterial contamination rather than a normal ferment — most often traced back to beans that were too wet or a temperature that ran too warm.

TRY THIS

Earthy, mushroomy, slightly nutty: normal, proceed as usual. Sharp ammonia, sour-rotten, or otherwise unpleasant: discard the batch. Trust smell over appearance here — colour alone (grey or black patches) is not a reliable sign of spoilage on its own.

Is coloured mould always a problem?

WHAT'S HAPPENING

Grey-black sporulation late in fermentation is normal for tempeh's own culture. Other colours — bright pink, orange, or a fuzzy blue-green distinct from the tempeh's own texture — are not part of a normal ferment.

TRY THIS

Grey or black, even patches, no odd smell: fine to eat. Pink, orange, or blue-green patches, or any colour paired with an off smell: discard the batch and review your process before the next attempt.

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When in doubt, don't eat it. Tempeh is always cooked before eating, never eaten raw — but if a batch smells ammonia-like or rotten, or shows unusual colours alongside an off smell, the safest move is to discard it rather than cook and eat it. This guide covers general fermentation troubleshooting and isn't a substitute for food safety advice specific to your situation.

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After fermenting

A good batch can still be let down by what happens in the hour after it comes out of the incubator.

Can I refrigerate or stack tempeh straight away?

WHAT'S HAPPENING

Warm tempeh continues fermenting and generating heat for a while after you take it out of the incubator. Stacking or bagging it before it's cooled traps that heat, which can push the batch past done or encourage spoilage even in the fridge.

TRY THIS

Let blocks cool fully to room temperature, unstacked and with some airflow, before refrigerating. Pat away any condensation on the surface first.

How long does finished tempeh keep?

WHAT'S HAPPENING

Refrigerated tempeh continues to ferment very slowly, gradually developing a stronger flavour and more grey-black colour over time.

TRY THIS

Use within about a week from the fridge for best flavour, or freeze portions for longer storage — tempeh freezes well and can be cooked straight from frozen.

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Equipment & logistics

Tempeh's two-day, hands-on process is the main thing that puts people off trying it a second time.

This feels like a lot of hands-on steps for a home ferment — is that normal?

WHAT'S HAPPENING

Unlike a set-and-forget ferment, tempeh involves soaking, cooking, drying, inoculating, and then monitoring temperature over 1–2 days — genuinely more hands-on than most home fermentation projects.

TRY THIS

Batch the active steps (soak beans overnight, cook and dry the next morning, inoculate by early afternoon) so the long incubation period falls overnight and during a normal day, rather than needing constant attention.

Scaling up to a bigger batch is giving me worse results

WHAT'S HAPPENING

Larger batches often get packed into thicker blocks, which brings back the centre-binding and overheating problems covered above.

TRY THIS

Scale by adding more bags or trays at the same thickness, rather than making existing blocks bigger or thicker.

Good Results

Have made 2 batches of tempeh over the last week, one using soy beans and the other using chickpeas, excellent results, no issues.

Thank you for your review! We're glad to hear that you've had good results with our Organic Tempeh Starter Culture. It's great to know that it worked well for both soy beans and chickpeas. Keep on enjoying your homemade tempeh!

Works really well, very happy with this, my chickpea tempeh turns out perfectly, thank you

Hi there! We're so glad to hear that our Organic Tempeh Starter Culture is working well for you and that you're happy with the results. We appreciate your feedback and thank you for choosing our product. Happy tempeh-making! :)

Good product but small packet size

It's a good starter but only useful for small batches. I wish there was a bigger bag size and I could save on shipping

Hi there, thank you for your feedback on our Organic Tempeh Starter Culture. We're glad to hear that it's a good product for you, but we apologise for the inconvenience of the small packet size. We will definitely take your suggestion into consideration and see if we can offer a larger bag size in the future to help save on shipping costs. Thank you for choosing our product!

Tempeh starter culture

I have found the starter culture to be a terrific product, however I would like to see it in a 20gm pack to save on packaging. Also the postage is too expensive.

Hi there! Thank you for your feedback on our Organic Tempeh Starter Culture. We're glad to hear that you find it to be a terrific product. We appreciate your suggestion for a larger pack size to reduce packaging. We will definitely consider this for future packaging options. Thank you also for bringing up the issue of postage costs. We simple charge Australia Post shipping rates to ensure the best value for our customers. Thank you for your support and happy tempeh-making!