All orchids are edible. The most common type is the Vanilla planifolia, which produces vanilla oil. Take care, however, to thoroughly wash any flowers prior to eating.
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Diane Dilov-Schultheis has been writing professionally since 2000. She is a food and travel writer who also specializes in gaming, satellites, RV repair, gardening, finances and electronics. She is a member of the Society of Professional Journalists and has been published online at the Travel Channel and Intel.