Molasses — that thick, dark, bittersweet syrup — takes its name, improbably, from honey. Portuguese melaço derives from Late Latin mellaceum (honey-like), from Latin mel (honey), from Proto-Indo-European *melit- (honey). The same root gives English mellifluous (flowing like honey) and the name Melissa (Greek for honeybee).
The connection between honey and molasses reflects the fact that, before cane sugar became widely available, honey was the primary sweetener known to Europeans. When Portuguese traders encountered the thick syrup produced as a byproduct of sugar refining, they named it by analogy with the sweetener they knew — even though molasses and honey have little in common beyond sweetness.
Molasses became one of the most economically important commodities in the colonial Atlantic world. The triangular trade of the 17th and 18th centuries moved molasses from Caribbean sugar plantations to New England distilleries, where it was converted to rum; the rum was traded to Africa for enslaved people, who were transported to the Caribbean to produce more sugar and molasses. This brutal economic cycle made molasses central to both the wealth of colonial New England and the horrors of the Atlantic slave trade.
The British Molasses Act of 1733, which imposed duties on molasses imported from non-British colonies, was one of the early grievances that contributed to American colonial resentment — a precursor to the more famous Stamp Act and Tea Act. American colonists depended on cheap French and Dutch molasses for their rum industry, and the tax was widely evaded through smuggling.
The most dramatic episode in molasses history occurred on January 15, 1919, when a massive storage tank in Boston's North End burst, releasing approximately 2.3 million gallons of molasses in a wave estimated at 25 feet high, moving at 35 miles per hour. The Great Molasses Flood killed 21 people, injured 150, and damaged buildings and infrastructure across several blocks. The disaster led to significant
In British English, the equivalent term is treacle — from Greek thēriakē (antidote against venom) via a complex semantic journey of its own. The fact that two such different etymological paths — one from honey, one from snake-bite remedy — converge on the same thick, dark syrup is a reminder that words arrive at their meanings by many routes.