Pantry Staples
Dark Corn Syrup Conversion
Dark Corn Syrup weighs 328g per US cup.
| Amount | Grams | Ounces |
|---|---|---|
| 1 cup | 328.0 g | 11.57 oz |
| 1/2 cup | 164.0 g | 5.78 oz |
| 1/4 cup | 82.0 g | 2.89 oz |
| 1 tbsp | 20.5 g | 0.72 oz |
| 1 tsp | 6.8 g | 0.24 oz |
| 100 g | 100.0 g | 3.53 oz |
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Dark corn syrup weighs 328 grams per cup, the same as light corn syrup, since the two share essentially the same base product — the difference between them comes from added refiners' syrup (a molasses-like byproduct of sugar refining) and caramel color, which darken the flavor and appearance of dark corn syrup without meaningfully changing its density.
That deeper flavor — closer to a mild molasses note — is exactly why dark corn syrup is the standard choice for recipes like pecan pie, where a more robust caramel-like sweetness is part of the point, while light corn syrup's cleaner, more neutral sweetness suits recipes where corn syrup's main job is preventing sugar crystallization without adding its own flavor.
Corn syrup (light or dark) is chemically distinct from high-fructose corn syrup, despite the similar name causing regular confusion — corn syrup is essentially pure glucose syrup, while high-fructose corn syrup has been further processed to convert some of that glucose into fructose, a different product used mostly in commercial food and beverage manufacturing rather than home baking.
Corn syrup's high sugar concentration resists spoilage the same way other concentrated syrups do, so a tightly sealed bottle in a cool pantry holds its consistency and flavor for a long stretch without needing the fridge.
A classic Southern chess pie relies on a filling built around corn syrup, sugar, butter, and eggs, producing a dense, sweet custard texture distinct from a fruit-based pie.
Dark corn syrup is a traditional component of pecan pie precisely because its molasses-like depth complements the toasted, buttery flavor of pecans better than a plain, neutral sweetener would, a pairing that's become a defining American holiday dessert.
It can be substituted in some savory glaze applications too, adding both sweetness and a glossy sheen to a roasted ham or a barbecue sauce, though its distinct flavor is more assertive than a plain sugar syrup.
Frequently asked questions
Is dark corn syrup heavier than light corn syrup?
No — both weigh about 328g per cup, since they share the same base syrup; dark corn syrup's added refiners' syrup and caramel color change its flavor and color, not its overall density.
Can I substitute light corn syrup for dark in a recipe?
Yes, texturally, but the flavor will be noticeably cleaner and less caramel-like — dark corn syrup's molasses-adjacent depth is often specifically why a recipe like pecan pie calls for it, so the swap changes the finished flavor.
Is corn syrup the same as high-fructose corn syrup?
The two get confused constantly, but a home baking recipe calling for "corn syrup" (light or dark, sold in a squeeze bottle) is asking for the plain glucose version — HFCS is a separate, industrial-scale product almost never sold directly to home cooks at all.
Why is corn syrup used in candy-making?
Its molecular structure interferes with sugar crystallization, helping candies and syrups stay smooth rather than turning grainy — a functional role beyond just adding sweetness, which is why some candy recipes specifically won't work well without it.
Can honey or maple syrup replace corn syrup?
They can work in many recipes but don't perform the same anti-crystallization function as reliably, and both add their own distinct flavor — a reasonable substitute for general sweetness, but not a perfect functional match in a candy recipe relying on corn syrup's specific properties.