What Makes Tuna, Tuna? Subway Lawsuit Aims to Find Out

The world’s largest sandwich chain is facing another controversy: whether the tuna fish it uses is truly 100% tuna.

What Makes Tuna, Tuna? Subway Lawsuit Aims to Find Out
photo of Subway Restaurant exterior

The world’s largest sandwich chain is facing another controversy: whether the tuna fish it uses is truly 100% tuna.