Here's the list of ingredients in Trader Joe's Turkeyless Protein Patties: hydrated pea protein blend (water, pea protein), sunflower oil, natural flavours, methyl cellulose, oat fibre, sea salt, nutritional yeast (dried yeast, niacin, pyridoxine hydrochloride, thiamine hydrochloride, riboflavin, folic acid, cyanocobalamin), onion powder, mushroom powder, garlic powder, fruit juice (colour), vegetable juice (colour).
Some of those ingredients may sound weird, but note that nutritional yeast is made up of a variety of B vitamins: niacin (B3), pyridoxine hydrochloride (B6), thiamine hydrochloride (B1), riboflavin (B2), folic acid (B9), cyanocobalamin (B12). So basically these Turkeyless Patties are made from pea protein, oil, fibre (methyl cellulose), nutritional yeast, and some spices and fruit juice. It's not the shortest list of ingredients, but at least it's not made from chemicals or ingredients you've never heard of.