My mum used to work for a large frozen food wholesaler and we used to get food (sometimes better described as “food”) to try/test. Some good, some awful. Particular highlight was the “cheese-in burger” where the cheese was in the middle. Sadly as it was combined with the cheapest, fattiest burgers ever, when you grilled them the central cavity filled with hot fat and when you pricked them to get them to deflate you were treated to a jet of lava-hot fat mixed with melted cheese-food product. If it hit you it stuck and burned like napalm, if it missed you, you were in for hours of fun cleaning the kitchen and grill.
Side effect of her working there was that I was taught the subtle difference between “home cooked” and “home made” written on a menu as she knew who in the area bought frozen stuff and passed it off as stuff they made.