Zest
Zest is the outer, colored part of citrus peel. To zest is to use a tool, such as a zester or sharp knife, to remove that outer layer without removing the white pith underneath.
Useful Links:
How To Easily Zest Lemons, Limes, and Oranges | Kitchn
Fun related videos
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Orange Zest and Supreme
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Cooking & Culinary Tips : How to Make Orange Zest
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