The plot has thickened in the Justin Trudeau-Heinz ketchup controversy, as consumers with bottles that say "Product of USA" ...

Ketchup—that cheerful red sauce sold in handy glass bottles—first came on the American market in the 19th century. But its ingredients ... Henry J. Heinz, and an underpaid federal chemist.

The plot has thickened in the Justin Trudeau-Heinz ketchup controversy, as consumers with bottles that say "Product of USA" question ... workers and use Canadian ingredients, profits still ...

At least two dozen readers have contacted CBC since Trudeau's remarks, however, to say their Heinz ketchup bottles are labelled Product of USA ... and use Canadian ingredients, profits still ...