Gainsburgers... *SHUDDER* lets not go back there! "semi-moist" foods (IMO) are the worst possible choice! They are loaded with sugar and preservatives to keep them "meaty"
Check out Purina® brand Moist & Meaty Chopped Burger:
Ingredients Beef, high fructose corn syrup, soybean grits, soybean flour, water, wheat flour, corn syrup, calcium carbonate, brewers condensed solubles, phosphoric acid, salt, sorbic acid (added to prevent spoilage), calcium propionate (added to prevent spoilage), DL-Methionine, choline chloride, zinc sulfate, ferrous sulfate, vitamin supplements (E, A, B-12, D-3), ethoxyquin (a preservative), added color (Red 40), riboflavin supplement, manganese sulfate, niacin, calcium pantothenate, copper sulfate, biotin, thiamine mononitrate, folic acid, pyridoxine hydrochloride, menadione sodium bisulfite complex (source of Vitamin K activity), calcium iodate, sodium selenite.
Source:
http://lab-retriever.net/board/showthread.php?t=38587