The dark, viscous syrup left after sucrose is crystallised out of cane juice. Bittersweet, mineral-heavy and mildly acidic.
What it does in a recipe: Deep colour, bitter-caramel flavour, moisture, and enough acidity to activate baking soda on its own. Pick the swap that covers that job — the ratios below are written so you can act on them without doing any arithmetic.
Also called: Black treacle, Dark molasses, Cane molasses
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Black treacle
1 cup molasses = 1 cup black treacle
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4 ways to replace molasses
Black treacle
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1 cup molasses = 1 cup black treacle
The British equivalent of dark molasses, made the same way and carrying the same acidity and mineral bitterness.
Trade-offMarginally sweeter and a touch less bitter than American dark molasses. No adjustment needed.
1 cup molasses = 3/4 cup packed dark brown sugar + 1/4 cup water
Dark brown sugar is sucrose with molasses folded back in, so dissolving it recreates a thinner version of the original syrup at roughly the right concentration.
MethodWarm gently and stir until completely dissolved, then cool before adding to a batter.
Trade-offConsiderably sweeter and much lighter in colour, with none of the bitter edge. Where the recipe relies on molasses to react with baking soda, add 1/2 tsp lemon juice to restore the acidity.
It fills the same liquid-sweetener slot at a similar sugar concentration, keeping the batter's moisture balance intact.
Trade-offFar paler, thinner and sweeter, and much less acidic — a recipe leaning on molasses to lift baking soda will rise poorly. The whole character of a gingerbread changes.
Blackstrap molasses is a third boiling and is markedly more bitter and salty than regular molasses. Swapping it in one-for-one will make baked goods taste medicinal — use half blackstrap and half another syrup if it is all you have.
Cooking around an allergy? Diet tags here describe the ingredient itself, not any particular brand. Processed products change formulation without notice and shared production lines are common, so read the label on everything you use. A severe allergy is a medical matter — confirm with the manufacturer or your clinician rather than relying on a substitution chart.