Oranges & Tangerines are coated with "LAC" (non-kosher), and scale.

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Oranges & Tangerines may be coated with Lac resin (an extract from insects). we have seen it printed on the bags at Shop-Rite. If one intends to use orange rind, the Lac resin would be a concern. Another concern would be that at times on citrus fruits there are tiny inbedded insects or larvae known as "scale".