Pei Wei's own site lists calories and allergens but no ingredient statements, so this rating comes from the EveryBite platform, where soybean or canola oil is named in 70 of the 88 dishes that carry any ingredient list at all. Additives could not be judged because the branded sauces and proteins in that feed are never broken down further.
Rated 2026-09-03 on seed_oil and nova only. peiwei.com publishes calories and allergen tags and ZERO ingredient statements (/nutritional-information/, 210,090 bytes). Nutritionix pei-wei-asian-diner: 13,183-byte EMPTY TEMPLATE. SOURCE IS EVERYBITE, third-party, NOT peiwei.com: restaurant id 9562e6d9-fd85-4d65-b4ab-e44062550a54, 109 dishes, 88 with any ingredient entry. A seed oil is named in 70 of those 88 - "Oil, soybean, salad or cooking" in 67, canola in 4 (Thai Dynamite Tofu, Stix Thai Basil Cashew Chicken, Thai Basil Chicken, Thai Basil Cashew Chicken), vegetable oil in 1 (Vegetable Spring Roll). The 18 with data but no hit are salads, rice and soup whose sauces are not broken out - not shown free of it. Hence amount=all. Confidence 0.5 not 1.0: peiwei.com does not embed EveryBite, so the feed is unverified against the chain. Additives NULL - the feed stops at branded names (KEN'S, Mama La's, Cuisine Solutions). nova=some. Plastics NULL, not in plasticlist.org.