Molasses
Molasses began its time in the colonies as a popular ingredient, and ended as a political revolutionary tool, which is quite a journey! Molasses is a byproduct of turning sugar cane into sugar and looks like thick brown syrup. It was used in baking and also to make rum.
Unfortunately, in the early 1700s, demand for French molasses rose, and demand for British molasses fell. So the British passed the Molasses Act of 1733 which placed a tariff on all foreign molasses imported into the US. This was one of the acts that led to the American Revolution, so it didn’t turn out well for Britain in the end.