mangrove jack yeast

Discussion in 'General Brewing Discussions' started by goschman, Mar 28, 2019.

  1. Iliff Avenue Brewhouse

    Iliff Avenue Brewhouse Well-Known Member

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    Anyone have any information/impressions on M15 or M36? I have seen yeast equivalency charts including mangrove jack but can't seem to find it.
     
  2. Hogarthe

    Hogarthe Well-Known Member

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    I've only used m42 new world strong ale from mangrove jack. It works great in stouts. Can't comment on their other yeasts specifically, but based on good experience with the m42 I wouldn't hesitate to try their others.
     
  3. AHarper

    AHarper Well-Known Member

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  4. Iliff Avenue Brewhouse

    Iliff Avenue Brewhouse Well-Known Member

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  5. BOB357

    BOB357 Well-Known Member

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    M15 is a low attenuator and produces some pretty heavy fruity esters. Be sure to get the temperature up 68 of 70 after a couple days of active fermentation or this yeast will often drop like a rock. Great if you want a lot of body and some residual sweetness
    .
    I use M36 in many of my pale ales. It's produces some lighter estersand favors malt over hops a bit, but ferments fairly clean overall. Attenuation usually in the high 70s if you kick the temperature up when fermentation begins to slow. Otherwise, it can drop out early.

    I brew a lot of west coast IPAs and really like their M44.
     
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  6. J A

    J A Well-Known Member

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    I tried to pitch a batch of 1.042 Blonde with a packet of M44 and it was completely DOA. I read about some slow starts but at 36 hours it was as if I hadn't pitched a single yeast cell. Absolutely clear wort and not so much as a bubble. I pitched a packet of US-05 I had as a backup to keep the batch from going bad. I don't have the sort of environment that will let wort go unmolested without a krausen on it for days on end. ;)
    I really like their Witbier and Saison yeasts, but I don't think I'll bother with that one again.
     
  7. dmtaylor

    dmtaylor New Member

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  8. BOB357

    BOB357 Well-Known Member

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    Yep, canhappen with any yeast. I've had great results every time I've used it. I do dry yeast starters and generally M44 shows signs of active fermentation in less than 12 hours. I've heard of long lag times with BRY-97 and have never waited more than about 16 hours to see signs of active fermentation. Could go on and on about bad experiences with different strains, both liquid and dry. I don't because I know poor handling of yeast is far from rare. I can imagine it could be even worse when it comes from half way around the world.
     
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  9. BOB357

    BOB357 Well-Known Member

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  10. Iliff Avenue Brewhouse

    Iliff Avenue Brewhouse Well-Known Member

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    Now I'm afraid to try either of them. I hate how misleading manufacturer websites can be. They talk about high attenuation and high flocculation which sounds inaccurate.

    It looks like I used M79 before they changed stuff around. Looks like I got good attenuation (80%) but I remember not caring for the flavor profile very much.
     
  11. BOB357

    BOB357 Well-Known Member

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    The chance of dropping out early goes along with high flocculation. As long as you understand that you should be OK. No big thing to up the temperature a few degrees and swirl the fermenter. I haven't brewed anything lately that M15 would be a good fit for, but use M36 Liberty Bell quite often with good results.
     

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