Grind it up and mix it into your tea
From Fallen London Wiki
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From: Dove Mask Shard
'Powdered innocence' they call it. Honey might help. And ginseng. Cloves. Also cinnamon. Sugar. Mint...
Game Instructions: This will substantially decrease your suspicion and increase your Persuasive quality.
Unlocked with 
1 x Dove Mask Shard
Success
Well, that was...purgative
It's possible that guilt was among the many things you just expelled from your body. Is it your imagination, or over the next few days do people tend to grant you the benefit of the doubt?
Walking the Falling Cities is increasing… (+? CP, up to level 15)
You've lost 1 x Dove Mask Shard
Suspicion is dropping… (-7 CP)
Persuasive is increasing… (+5? CP, up to level 200 + 
Persuasive Gains)
