Substitutions

What can I use instead of light corn syrup?

A thick, neutral glucose syrup made by breaking down cornstarch. It is less sweet than sugar and, critically, resists crystallising.

What it does in a recipe: Interfering sugar — it keeps caramels chewy, icings glossy and sorbets smooth by blocking sucrose crystals from forming. Pick the swap that covers that job — the ratios below are written so you can act on them without doing any arithmetic.

Also called: Corn syrup, Karo syrup

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Quick answer

Glucose syrup

1 cup light corn syrup = 1 cup glucose syrup

All substitutes, best first

5 ways to replace light corn syrup

Glucose syrup

Closest match
1 cup light corn syrup = 1 cup glucose syrup

Functionally the same product sold under a different name in much of the world, with the same anti-crystallising behaviour and neutral flavour.

MethodConfectioner's glucose is stiffer than corn syrup. Warm the jar in hot water for a few minutes so it pours and measures accurately.

Trade-offNo practical difference in the finished sweet.

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Golden syrup

Reliable
1 cup light corn syrup = 1 cup golden syrup

Partially inverted cane syrup also resists crystallisation, so caramels stay chewy and glazes stay smooth.

Trade-offSweeter, amber-coloured and clearly buttery in flavour. Pecan pie takes it happily; a clear mirror glaze or a white marshmallow does not.

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Granulated sugar + water

In a pinch
1 cup light corn syrup = 1 1/4 cups granulated sugar + 1/4 cup water

This matches the sweetness and bulk, but sucrose alone will happily crystallise, so a trace of acid is needed to invert some of it during cooking.

MethodAdd 1/4 tsp cream of tartar or 1 tsp lemon juice and heat until fully dissolved, brushing the pan sides down with water so no stray crystals seed the syrup.

Trade-offSweeter than corn syrup and far more prone to graining. Acceptable in a pie filling, risky in fudge, caramel or anything that must stay glossy for days.

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Honey

Reliable
1 cup light corn syrup = 1 cup honey

Honey is largely invert sugar, which does the same crystal-blocking job that glucose does in corn syrup.

MethodBecause honey browns faster, take the oven down 25°F (15°C) and pull caramels off the heat a few degrees early.

Trade-offDistinctly floral and noticeably sweeter, and it darkens the finished sweet. Not vegan.

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Agave nectar

Reliable
1 cup light corn syrup = 1 cup agave nectar

A fructose-heavy syrup, so it resists crystallising and stays fluid at the same sort of concentration.

Trade-offThinner than corn syrup and sweeter, so soft-set candies may end up looser. It also browns faster, which shows in a baked filling.

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Worth knowing

Light corn syrup and high-fructose corn syrup are different products; the retail bottle in the baking aisle is the former. Dark corn syrup is light corn syrup with molasses and caramel added, and is not interchangeable where colour matters.

Related

More sweeteners

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.