{"product_id":"mangrove-jacks-beer-yeast-hop-head-ale-m66","title":"Mangrove Jacks M66 Hop Head Ale Yeast 10g","description":"\u003cp\u003eM66 is built for hazy, juicy, tropical IPAs. It produces fruity esters that complement modern hop varieties and is active in hop biotransformation — converting hop compounds into tropical, stone-fruit flavours during active dry hopping. The right yeast for New England IPA.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eBest Suited To\u003c\/b\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eNew England IPA (NEIPA), Hazy IPA\u003c\/li\u003e \u003cli\u003eHazy Pale Ale, juicy or tropical-style IPAs\u003c\/li\u003e \u003cli\u003eAmerican Pale Ale where fruit character is the goal, not a clean or dry finish\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 18–23°C (warmer pushes tropical ester expression)\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eAttenuation:\u003c\/strong\u003e Very High\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eFlocculation:\u003c\/strong\u003e Medium (produces characteristic permanent haze)\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eAlcohol tolerance:\u003c\/strong\u003e Up to 12% ABV\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003ePitching rate:\u003c\/strong\u003e 1 sachet per 23L at standard gravity\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cb\u003eWhen to Choose M66\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eChoose M66 over M44 when you are brewing a hazy or juicy IPA where tropical fruit character is part of the design. M44 is clean and dry; M66 is fruity and haze-forward. Do not use M66 when a clear, West Coast profile is the goal.\u003c\/p\u003e \u003cp\u003eChoose M66 over US-05 or M36 when hop biotransformation is the point. M66 actively transforms hop compounds during active fermentation — strains without this activity produce more conventional hop character.\u003c\/p\u003e \u003cp\u003e\u003cb\u003ePractical Notes\u003c\/b\u003e\u003c\/p\u003e \u003cp\u003eDry hop timing matters with M66. Add dry hops during active fermentation — day 2 or 3 — to maximise biotransformation. Post-fermentation dry hopping with M66 misses most of the flavour benefit.\u003c\/p\u003e \u003cp\u003eThe medium flocculation produces a permanent soft haze. This is expected and correct for NEIPA. Do not fine or cold-crash aggressively if haze is part of the style.\u003c\/p\u003e \u003cp\u003eFerment at the higher end of the range (21–23°C) to push tropical ester expression.\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":41994967154765,"sku":"25028","price":9.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0635\/8306\/0045\/files\/25028.jpg?v=1754072011","url":"https:\/\/www.australianhomebrewing.com.au\/products\/mangrove-jacks-beer-yeast-hop-head-ale-m66","provider":"Australian Home Brewing","version":"1.0","type":"link"}