theres a few ways im aware of they could hide it...

sloppy joe style minced and smothered in sauce.

lootbox surprise, by hiding it inside a product thats not see thru such as premade meals.

school lunch, where its the ONLY meat on the menu,,, of course this one is cheating but listing it as it would be a way to move the product and clame see see its selling people are eating it... yeah cus ya dont got a choice a lot of schools either ban ot heavly frown upon box lunch from home.