{"product_id":"culture-blend-liquid-culture-premix","title":"Culture Blend Liquid Culture Premix – Formula 15 (250 g, Makes 3+ Gallons)","description":"\u003cstyle\u003e\n.mgk-pdp{--g:#1a6b3a;--ink:#1a1a1a;--line:#e2e2e2;--fill:#f7f8f7;--muted:#6b6b6b;color:var(--ink) !important;box-sizing:border-box;max-width:100%}\n.mgk-pdp *,.mgk-pdp *::before,.mgk-pdp *::after{box-sizing:border-box}\n.mgk-pdp p,.mgk-pdp li,.mgk-pdp td,.mgk-pdp th,.mgk-pdp span,.mgk-pdp summary,.mgk-pdp div{font-size:inherit;font-family:inherit;color:var(--ink) !important;word-break:normal !important}\n.mgk-pdp h2,.mgk-pdp h3{color:var(--ink) !important;font-family:inherit}\n.mgk-pdp h2{margin:30px 0 10px}\n.mgk-pdp h3{margin:22px 0 8px}\n.mgk-pdp a{color:var(--g) !important;text-decoration:underline}\n.mgk-pdp .b{font-weight:600 !important}\n.mgk-pdp img{max-width:100%;height:auto;display:block;border-radius:10px;border:1px solid var(--line)}\n.mgk-pdp figure{margin:18px 0;max-width:100%}\n.mgk-pdp 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ul.mgk-ctas a.alt{background:#fff;color:var(--ink) !important;border:1px solid var(--line)}\n\u003c\/style\u003e\n\u003cdiv class=\"mgk-pdp\"\u003e\n\u003cp\u003eThe dry version of the broth we make in our own lab, in one pouch. \u003cspan class=\"b\"\u003eMyco Labs Culture Blend\u003c\/span\u003e is a pre-measured mix of extra light malt extract, dextrose, soy peptone and our nutritional supplement and mineral blend. Weigh it, dissolve it in hot water, and pressure cook. One 250 g pouch makes \u003cspan class=\"b\"\u003eover 3 US gallons of liquid culture\u003c\/span\u003e.\u003c\/p\u003e\n\u003cul class=\"mgk-facts\"\u003e\n\u003cli\u003e\n\u003cspan class=\"n\"\u003e250 g\u003c\/span\u003e\u003cspan class=\"l\"\u003enet weight (8.82 oz)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"n\"\u003e3+ gallons\u003c\/span\u003e\u003cspan class=\"l\"\u003eper pouch\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"n\"\u003e19.4 g\u003c\/span\u003e\u003cspan class=\"l\"\u003eper quart of water\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"n\"\u003e30 min\u003c\/span\u003e\u003cspan class=\"l\"\u003eat 15 PSI\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"n\"\u003eFormula 15\u003c\/span\u003e\u003cspan class=\"l\"\u003e15 years refined\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy growers use Culture Blend\u003c\/h2\u003e\n\u003cul class=\"mgk-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eThe recipe behind our own cultures\u003c\/span\u003e — Formula 15 is the result of 15 years of making and selling liquid cultures and fine-tuning the broth along the way.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eOne pouch instead of four ingredients\u003c\/span\u003e — no sourcing malt extract, dextrose and peptone separately, and no working out ratios.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eSugars plus nitrogen\u003c\/span\u003e — malt extract and dextrose feed fast growth, while soy peptone supplies the nitrogen that sugar-only recipes leave out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eConsistent batch to batch\u003c\/span\u003e — one blend and one weight per quart, so the jar you make next month matches the one you made today.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"b\"\u003eGoes a long way\u003c\/span\u003e — a single pouch covers about 12 quart batches or 25 pint batches.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMixing guide\u003c\/h2\u003e\n\u003cp\u003eMeasure by weight.\u003c\/p\u003e\n\u003cdiv class=\"mgk-tablewrap\"\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eWater\u003c\/th\u003e\n\u003cth\u003eCulture Blend\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 US pint\u003c\/td\u003e\n\u003ctd\u003e9.7 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 US quart\u003c\/td\u003e\n\u003ctd\u003e19.4 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 liter\u003c\/td\u003e\n\u003ctd\u003e20.5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 US gallon\u003c\/td\u003e\n\u003ctd\u003e77.5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eHow to make liquid culture\u003c\/h2\u003e\n\u003col class=\"mgk-steps\"\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan class=\"b\"\u003eMix\u003c\/span\u003e — add the measured Culture Blend to the matching amount of hot or boiling water and stir until fully dissolved.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan class=\"b\"\u003eFilter (optional)\u003c\/span\u003e — pour the mixture through a paper coffee filter to reduce light malt extract sediment.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan class=\"b\"\u003eCool and fill\u003c\/span\u003e — let the broth cool, then fill your jars, leaving headspace at the top.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan class=\"b\"\u003eSterilize\u003c\/span\u003e — pressure cook for 30 minutes at 15 PSI.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan class=\"b\"\u003eCool, then inoculate\u003c\/span\u003e — once the jars are back to room temperature, add 3–5 cc of spore solution or liquid culture, or a clean agar wedge.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan class=\"b\"\u003eIncubate\u003c\/span\u003e at 76–82°F, out of direct light, and swirl or stir regularly to keep growth even.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"mgk-callout\"\u003e\n\u003cp\u003e\u003cspan class=\"b\"\u003eExpect an amber broth.\u003c\/span\u003e Culture Blend is malt-based, so finished broth is yellow to light amber rather than water-clear. That is normal. Keep to the 30-minute cook time; running much longer can darken the sugars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"mgk-tablewrap\"\u003e\n\u003ctable class=\"mgk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMyco Labs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eCulture Blend Liquid Culture Premix, Formula 15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd\u003e8.82 oz (250 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMakes\u003c\/td\u003e\n\u003ctd\u003eOver 3 US gallons of liquid culture broth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMix ratio\u003c\/td\u003e\n\u003ctd\u003e19.4 g per US quart of water (77.5 g per US gallon)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIngredients\u003c\/td\u003e\n\u003ctd\u003eExtra light malt extract, dextrose, soy peptone, proprietary nutritional supplement and mineral blend\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterilization\u003c\/td\u003e\n\u003ctd\u003e30 minutes at 15 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003eTightly sealed, cool and dry; measure with a clean, dry utensil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUse\u003c\/td\u003e\n\u003ctd\u003eFor mushroom cultivation. Not for human consumption.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eLPM5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary class=\"mgk-faq\"\u003eHow much liquid culture does one pouch make?\u003c\/summary\u003e\n\u003cdiv class=\"mgk-faq-a\"\u003e\n\u003cp\u003eOne 250 g pouch makes over 3 US gallons of liquid culture broth at the label ratio. That works out to about 12 quart batches or 25 pint batches.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary class=\"mgk-faq\"\u003eHow much Culture Blend do I use per jar?\u003c\/summary\u003e\n\u003cdiv class=\"mgk-faq-a\"\u003e\n\u003cp\u003eMeasure by weight: 9.7 g per US pint of water, 19.4 g per US quart, or 77.5 g per US gallon. In metric that is about 20.5 g per liter. Use a gram scale rather than a measuring spoon so every batch comes out the same.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary class=\"mgk-faq\"\u003eWhat is in Culture Blend?\u003c\/summary\u003e\n\u003cdiv class=\"mgk-faq-a\"\u003e\n\u003cp\u003eExtra light malt extract, dextrose, soy peptone, and a proprietary nutritional supplement and mineral blend. It is the dry version of the broth recipe our lab has refined over 15 years of producing liquid cultures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary class=\"mgk-faq\"\u003eWhat color should the finished broth be?\u003c\/summary\u003e\n\u003cdiv class=\"mgk-faq-a\"\u003e\n\u003cp\u003eYellow to light amber. The color comes from the malt extract, so the broth will not be water-clear, and that is normal. It stays transparent enough to see mycelium growing in the jar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary class=\"mgk-faq\"\u003eDo I have to filter the broth?\u003c\/summary\u003e\n\u003cdiv class=\"mgk-faq-a\"\u003e\n\u003cp\u003eNo, filtering is optional. Pouring the dissolved mix through a paper coffee filter before you fill your jars removes light malt extract sediment, which makes new growth easier to spot and keeps the culture easier to draw through a needle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary class=\"mgk-faq\"\u003eHow long do I sterilize it?\u003c\/summary\u003e\n\u003cdiv class=\"mgk-faq-a\"\u003e\n\u003cp\u003ePressure cook for 30 minutes at 15 PSI. Cooking much longer than you need to can darken the sugars in the broth, so stick to the time on the label, then let the jars cool completely to room temperature before you inoculate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary class=\"mgk-faq\"\u003eWhat can I inoculate the broth with?\u003c\/summary\u003e\n\u003cdiv class=\"mgk-faq-a\"\u003e\n\u003cp\u003eSpore solution, an existing liquid culture, or a clean agar wedge. For a jar, 3 to 5 cc of spore solution or liquid culture is all it takes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary class=\"mgk-faq\"\u003eHow should I store the dry mix?\u003c\/summary\u003e\n\u003cdiv class=\"mgk-faq-a\"\u003e\n\u003cp\u003eKeep the pouch tightly sealed in a cool, dry place and always use a clean, dry utensil when measuring. Each pouch carries an expiration date on the back. Culture Blend is for mushroom cultivation and is not for human consumption.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cul class=\"mgk-ctas\"\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/lid-filters-injection-ports\"\u003eFilter lids and injection ports\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca class=\"alt\" href=\"\/collections\/liquid-culture-kits\"\u003eReady-made liquid culture kits\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca class=\"alt\" href=\"\/collections\/liquid-culture-syringes\"\u003eLiquid culture syringes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca class=\"alt\" href=\"\/collections\/grain-spawn\"\u003eGrain spawn to inoculate\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Myco Labs","offers":[{"title":"Default Title","offer_id":67637275000981,"sku":"LPM5","price":22.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Myco_Labs_Culture_Blend_Product_Still_Life.jpg?v=1791308102","url":"https:\/\/www.midwestgrowkits.com\/products\/culture-blend-liquid-culture-premix","provider":"Midwest Grow Kits","version":"1.0","type":"link"}