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It is recommended when roasting whole spices in Indian cooking to cool them before grinding into a powder. Why do you need to wait for the spices to cool and what happens if you don’t?

BigBrownBear00
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The reason to wait is that warm spices tend to clump when grinding, and the cooling step should help avoid this. I have a bladed coffee grinder that I use as a spice grinder. I rarely wait for toasted spices to cool. Sometimes they do clump in the grinder. I don't find it a problem, and just wipe out the ground, but sometimes stuck spices.

moscafj
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  • I didn’t have any clumping when I grinded the spices so I’m good to go? Want to make sure it’s not going to affect the final taste – BigBrownBear00 Oct 25 '21 at 12:15
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    I would say, good to go....I don't worry too much about it....maybe with the exception of grinding a lot at once, where a lot of steam will be generated. But we are talking cups, rather then the small amount for one dish. – moscafj Oct 25 '21 at 13:15
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    @BigBrownBear00 It depends on how much moisture is in your hard spices. If you have fresh cumin, for example, it will have a reasonable amount of moisture in it and, while still hot, if you grind it, that hot moisture can come out more readily as steam, creating a humid environment in the cool grinder and causing the spices to clump. If your spices aren't clumping when ground hot it could be that they're just a bit stale and have dried out already, or it could be that you roasted them for so long that there's not a lot of moisture left in them. – J... Oct 25 '21 at 19:59