{"product_id":"mangrove-jacks-beer-yeast-bohemian-lager-yeast-m84","title":"Mangrove Jacks M84 Bohemian Lager Yeast 10g","description":"\u003cp\u003eM84 produces authentic Czech and Bohemian lager character — soft, round, malt-forward, with very low ester production and the clean, bready finish that defines traditional Czech Pilsner. This is a true lager yeast requiring cold fermentation. You need the ability to hold 8–14°C for several weeks.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eBest Suited To\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eCzech Pilsner, Bohemian Pilsner\u003c\/li\u003e \u003cli\u003eMunich Helles, Vienna Lager, Märzen\u003c\/li\u003e \u003cli\u003eGerman Dunkel, Rauchbier\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eSpecs\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eFermentation temp:\u003c\/strong\u003e 8–14°C primary; 0–4°C lagering (4–6 weeks)\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eAttenuation:\u003c\/strong\u003e Medium-High\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eFlocculation:\u003c\/strong\u003e High\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eAlcohol tolerance:\u003c\/strong\u003e Up to 9% ABV\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003ePitching rate:\u003c\/strong\u003e 2 sachets per 23L (cold fermentation requires higher pitch rate)\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eWhen to Choose M84\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eChoose M84 over M54 California Lager when you have cold fermentation capability and want traditional Czech or Bohemian lager character. M54 produces lager-like results at ale temperatures — useful when cold fermentation is not an option, but not the same result as a proper cold-fermented lager.\u003c\/p\u003e \u003cp\u003eChoose M84 over M76 Bavarian Lager when brewing Czech or Bohemian styles. M76 is better suited to Munich styles (Helles, Märzen, Dunkel) where the malt profile is fuller and rounder. M84 suits the drier, crisper Czech profile.\u003c\/p\u003e \u003cp\u003e\u003cb\u003ePractical Notes\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eThe diacetyl rest is not optional. After primary fermentation at 8–12°C, raise the temperature to 18°C for 48 hours before moving to cold conditioning. Skip this step and your lager will have butterscotch character that does not age out.\u003c\/p\u003e \u003cp\u003eTwo sachets per 23L is standard — lager yeasts require a higher pitch rate at cold temperatures. Pitch at 10–12°C. Do not pitch warm and crash cold.\u003c\/p\u003e \u003cp\u003eM84 produces sulfur during active fermentation. This is normal and dissipates during cold conditioning.\u003c\/p\u003e \u003cp\u003eKeep refrigerated. Once opened, reseal and use within 7 days.\u003c\/p\u003e \u003cp\u003e\u003cem\u003eReviewed by the AHB Brewing Team — June 2026.\u003c\/em\u003e\u003c\/p\u003e","brand":"Mangrove Jack's","offers":[{"title":"Default Title","offer_id":41994560569421,"sku":"25007","price":9.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0635\/8306\/0045\/files\/25007.jpg?v=1754053108","url":"https:\/\/www.australianhomebrewing.com.au\/products\/mangrove-jacks-beer-yeast-bohemian-lager-yeast-m84","provider":"Australian Home Brewing","version":"1.0","type":"link"}