<<Disclaimer: Verify this information before applying it to your situation.>> What a pleasant surprise, in the neighborhood supermarket! >From Franklin Farms, the mushroom people, in PA and likely available throughout the Northeast. Two kinds: Portabella and Veggie. Both made with soy protein and held together with egg whites, not gluten. The only difference between the two in ingredients seems to the order of mushrooms and vegetables on the ingredient list and that there's more soy in the Portabella. I've only tasted the Portabella so far, but find the taste and texture close to that of the Boca Burger. These were out in the produce section in the mushroom area along with their boxed mushrooms. There's an expiration date, but it says "use or freeze by". They do know what gluten is and have checked out questionable ingredients. Oh, I forgot to ask about "cultured dextrose", but it's near the bottom of the list and I can't get very excited about some culture medium residual in that position( given the Finnish results with wheat starch that I recently reported.) See www.FranklinFarms.com or e-mail at [log in to unmask] Leave a message at 800--204-1508 or call 860-642-307. Kemp Randolph Long Island -- ----------------------------------------------------------- <[log in to unmask]>