Editing Milling
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# The gap must be small enough so that all the kernels are crushed, which helps to maximize efficiency. This can easily be verified by milling about a cup of grain and visually inspecting it (carefully sort through it looking for uncrushed kernels).<ref name=pro/> | # The gap must be small enough so that all the kernels are crushed, which helps to maximize efficiency. This can easily be verified by milling about a cup of grain and visually inspecting it (carefully sort through it looking for uncrushed kernels).<ref name=pro/> | ||
# The gap must be large enough to avoid problems with a [[stuck mash]] or slow lautering/recirculation.<ref name=bsp/><ref name=pro>Miller D. [http://brewlikeapro.net/maltmilling.html Mills and milling.] Brew Like A Pro website. 2012. Accessed 2020.</ref><ref name=kuhbeck>Kühbeck F, Dickel T, Krottenthaler M, et al. | # The gap must be large enough to avoid problems with a [[stuck mash]] or slow lautering/recirculation.<ref name=bsp/><ref name=pro>Miller D. [http://brewlikeapro.net/maltmilling.html Mills and milling.] Brew Like A Pro website. 2012. Accessed 2020.</ref><ref name=kuhbeck>Kühbeck F, Dickel T, Krottenthaler M, et al. | ||
[https://onlinelibrary.wiley.com/doi/pdf/10.1002/j.2050-0416.2005.tb00690.x Effects of mashing parameters on mash β-glucan, FAN and soluble extract levels.] ''J Inst Brew.'' 2005;111(3):316–327 | [https://onlinelibrary.wiley.com/doi/pdf/10.1002/j.2050-0416.2005.tb00690.x Effects of mashing parameters on mash β-glucan, FAN and soluble extract levels.] ''J Inst Brew.'' 2005;111(3):316–327.</ref> This greatly depends on your system/process, and experimentation is required to find the smallest acceptable gap. For example, a simple BIAB system can tolerate a fine crush, whereas a recirculating system tends to benefit from more intact husks. Keep in mind that excessive husk damage can potentially affect beer quality (see below).<ref name=Mousia/> Also be aware that 2-roller mills have a lower limit at which the rollers can feed the grain. | ||
For most systems, a gap in the range of 0.025" to 0.050" (0.7–1.2mm) is appropriate.<ref name="LOB-1069"/><ref>[http://www.themodernbrewhouse.com/forum/viewtopic.php?f=4&t=697 Dry crush mill gap.] The Modern Brewhouse website. 2018. Accessed 2020.</ref> To measure this, a feeler gauge (which is a stack of metal pieces with different marked thicknesses) can be inserted into a gap to precisely measure it. To achieve gaps that are not the same as a single blade, stack multiple blades together to add up to the gap you want to set. In a pinch, a standard credit card can be used to set a 0.030" (0.76mm) gap.<ref>[https://en.wikipedia.org/wiki/ISO/IEC_7810 "ISO/IEC 7810."] Wikipedia. Accessed May 2020.</ref> If you have a 3-roller mill, an angled feeler gauge should be used because a straight feeler gauge cannot access the adjustable gap while the mill is assembled. | For most systems, a gap in the range of 0.025" to 0.050" (0.7–1.2mm) is appropriate.<ref name="LOB-1069"/><ref>[http://www.themodernbrewhouse.com/forum/viewtopic.php?f=4&t=697 Dry crush mill gap.] The Modern Brewhouse website. 2018. Accessed 2020.</ref> To measure this, a feeler gauge (which is a stack of metal pieces with different marked thicknesses) can be inserted into a gap to precisely measure it. To achieve gaps that are not the same as a single blade, stack multiple blades together to add up to the gap you want to set. In a pinch, a standard credit card can be used to set a 0.030" (0.76mm) gap.<ref>[https://en.wikipedia.org/wiki/ISO/IEC_7810 "ISO/IEC 7810."] Wikipedia. Accessed May 2020.</ref> If you have a 3-roller mill, an angled feeler gauge should be used because a straight feeler gauge cannot access the adjustable gap while the mill is assembled. |