Iodine starch test: Difference between revisions
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[[Image:Iodine_before_conversion.jpg|thumb|150px|right|Iodine test before starch conversion]] | [[Image:Iodine_before_conversion.jpg|thumb|150px|right|Iodine test before starch conversion]] | ||
[[file:Iodine_after_conversion.jpg|thumb|150px|right|Iodine test after starch conversion]] | |||
An iodine starch test is useful to tell if all your [[starch]] has been converted to [[sugar]] during the [[mashing]] process. Take a small sample of liquid from your mash (a few drops is fine) and place it on a plate or in a glass. Make sure that it is free of solids. Add a few drops of [[iodine]]. If the liquid turns purple, there is still starch that needs to be converted. If the liquid stays the color of the iodine (reddish), then all your starch has been converted to sugar. See [[Cooked_rye_mash|Uncle Jesse's Cooked rye mash]] page for some pictures of how this works. | An iodine starch test is useful to tell if all your [[starch]] has been converted to [[sugar]] during the [[mashing]] process. Take a small sample of liquid from your mash (a few drops is fine) and place it on a plate or in a glass. Make sure that it is free of solids. Add a few drops of [[iodine]]. If the liquid turns purple, there is still starch that needs to be converted. If the liquid stays the color of the iodine (reddish), then all your starch has been converted to sugar. See [[Cooked_rye_mash|Uncle Jesse's Cooked rye mash]] page for some pictures of how this works. | ||
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==External Links== | |||
*[https://brewhaus.com/blog/how-to-do-an-iodine-test-when-fermenting/ How To Do An Iodine Test When Fermenting] | |||
[[Category:How-To]] | [[Category:How-To]] | ||
[[Category:Mashing]] | [[Category:Mashing]] | ||
[[Category:Glossary]] | [[Category:Glossary]] | ||
Latest revision as of 05:11, 7 February 2019
An iodine starch test is useful to tell if all your starch has been converted to sugar during the mashing process. Take a small sample of liquid from your mash (a few drops is fine) and place it on a plate or in a glass. Make sure that it is free of solids. Add a few drops of iodine. If the liquid turns purple, there is still starch that needs to be converted. If the liquid stays the color of the iodine (reddish), then all your starch has been converted to sugar. See Uncle Jesse's Cooked rye mash page for some pictures of how this works.