Campbell Chunky New England Clam Chowder, 15.25-Ounce Microwavable Containers (Pack of 8)

The clam chowder actually tastes pretty decent, but it seems to have very small pieces of clam shells or something that gives it a gritty texture. I don't know what it is, but I just can't stand it when I bite into something that feels like glass crunching in my teeth.