The process or act of making something crispy by cooking or drying it out.
Present participle of 'crisp' (used as a verb), formed with '-ing.' Can function as a noun describing the process or as a verb form describing ongoing action.
The gerund 'crisping' is brilliant because it turns an action into a thing you can talk about—so 'the crisping of the edges' lets you describe and analyze what's happening in your cooking.
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