Most citrus fruits sold in stores are coated in a light wax to prolong their lifespan, according to the source material. That coating poses no problem if the fruit is only being juiced for a recipe. But for any dish that calls for zest or peel, the source advises lightly scrubbing the fruit under warm water first.
The distinction matters because zest and peel carry the fruit's outer surface directly into the final dish, whereas juice is extracted from the interior. A quick scrub under warm water is the simple step recommended before using the exterior of the fruit.
The source does not specify which types of wax are used, how common the practice is across different citrus varieties, or whether organic fruits follow the same coating process. It also does not quantify how much wax remains after scrubbing or whether warm water alone removes it entirely. Those details are not addressed in the provided material.
For home cooks, the practical takeaway is straightforward: if a recipe relies on citrus zest or peel, wash the fruit under warm water before use. If the recipe only needs juice, the wax coating is not a concern according to the source.
Editorial Notes