Subwayhas been tweaking its menu for the past year like its survival depends on it.

But behind the scenes, one pesky ingredient is still causing the chain major trouble:the questionable tuna.

When it was first filed in January, the lawsuit was a bombshell.

subway condiments

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However, deception by Subway was only one possible scenario.

And this is exactly the explanation Subway decided to run with.

For now, the legal battle wages on.

subway sandwich

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