Lime Steep Rye Grain Tek

Discussion in 'MYCO-TEKS' started by FallenOak, Jul 19, 2016.

  1. FallenOak

    FallenOak Mushroom Cultivator Mushroom Doctor Supporter

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    I have been preparing my organic rye grain spawn using a lime steep method inspired by cue's wbs steep tek (https://www.mycotek.org/index.php?threads/wbs-steep-tek.7005/). I do things a bit differently though, so I thought I might as well share my method...

    First, measure the ingredients. I use 1 qt. of water for every 2 cups of grain. For this batch I am doing 20 cups of grain to make one 15 lb bulk bag, therefore I will be using 2.5 gallons of water (10 qts).
    For every cup of grain, measure 1/4 teaspoon of hydrated lime, I use hi-yeild brand. I also add 1/4 tsp of gypsum for every cup of grain, but this is optional. For this batch I need 5 tsps lime and 5 tsps gypsum. As an aside, I don't pre rinse my grain because the stuff I buy is already quite clean and free of dust.
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    Heat the water to a boil.
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    Thoroughly dissolve 1/4 tsp lime (and optional 1/4 tsp gypsum) per cup of grain in a seperate vessel of hot water and add it back to the main steep vessel. The gypsum probably won't fully dissolve, don't worry about it.
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    Remove pot from heat source, add grain, stir gently and lid tightly. Allow the grain to steep for 30-45 mins, or until grains are translucent around the edges and split easily with a thumbnail.
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    Strain the grain in batches, or invest in a muslin or nylon Brewer bag or a paint strainer. Don't rinse in order to maintain the heat needed for steam drying.
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    Lay out on a towel and allow to steam dry, gently turning occasionally until kernels are dry to the touch and pass the TP test.
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    Load up your grain into container(s) of choice, I'm using xl .5 micron mycobags. This 20 cup recipe can fill 20+ qt jars.
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    One cool trick I found for keeping these large bags from 'sploding in the PC is to slip the bag into another bag! They both vaccum seal up nicely, and I feel more confident while handling/storing the bag between PCing and inoculation.
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    PC for 2 hours, or however long you normally do. When doing two of these 15 lb bag in the AA, I tend to go longer, like 2 1/2 hours.

    Thats about it, enjoy y'all!
     
    Last edited: Jul 19, 2016
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  2. cue

    cue Well-Known Member

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    Each type of grain is little different to prep.
    Thx for sharing how you steep your rye.
    I have a friend that was just asking me how he should prep. I was sure that the steep tek would also work for him, but I just didn't know how long he should steep it.
     
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  3. tazzman

    tazzman Hobby Grower Mushroom Doctor Supporter

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    Very nice write up FO !!
     
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  4. FewTrueSeed

    FewTrueSeed Many meiosis Supporter

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    Thanks! I'm going to give this a shot, I like to weigh out my ingredients. I never considered using lime in grain spawn.
     
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  5. FallenOak

    FallenOak Mushroom Cultivator Mushroom Doctor Supporter

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    I've found that a cup of rye weighs around 200 grams.
     
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  6. FewTrueSeed

    FewTrueSeed Many meiosis Supporter

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    Makes sense. I always weigh out total substrate and calculate hydration rate, just to insure consistency. An old habit from when I worked in the bakery.
     
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  7. FractalXplora

    FractalXplora Master Mycologist

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    Excellent tek Fallen, nice and simple, I've got a big bag of lime from doing the straw lime soak method for oysters a few years back, will be giving this a shot soon.

    Frac
     
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  8. MB3

    MB3 more fun than a ferret in you

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    Thanks for the rye steep tek, appreciate you sharing, FO.
     
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