He found variants such as tins of tuna where one tin contained 35 per cent tuna (supermarket brand with flavoured oils) while ...

When you're at the supermarket, do you wonder how much much tuna you're getting in a can? A series of popular social media has been comparing how much food there is in some packaged items.

But in the world of canned tuna, there is a surprisingly deep debate: oil-packed versus water-packed. This allegedly trivial split can completely redefine the character of tuna in a recipe, from ...