Great ideas, but sausage and bacon could be swapped with each other, so one of them needs to be changed to make grid valid.

Fun grid, but only just solvable by luck, as bacon and sausage are interchangeable between their two groups (tomato could be swapped into it too - the sausage group is a bit too open). If you change sausage to something that can't go in the bacon/tomato group (fig, maybe?) you lose a nice red herring, but have a grid that actually works. There's only meant to be one workable solution to the grids, and there's at least one item in the bacon group that can be directly swapped with sausage.