Polenta, Dry

One US cup of polenta, dry weighs between 140.1 and 184 grams, depending on how the cup is filled and which source measured it. That range is the answer; a single number would not be. Every figure behind it is below, with the method each source used.

Also called dry polenta, coarse cornmeal, coarse ground cornmeal, corn grits polenta, bramata polenta, yellow corn polenta.

Polenta packs at 140 to 184 g per US cup depending on grind and brand. Even within a single brand's product line (Bob's Red Mill Corn Grits Polenta at 140 g per cup versus Organic Yellow Corn Polenta at 184 g per cup), the spread is 31 percent — well over the 10 percent milled tolerance held for this category.

Polenta is coarsely ground yellow (or occasionally white) cornmeal, sold both as the raw ingredient and as the Italian porridge cooked from it. The ingredient itself spans a range of grinds. Fine polenta (or quick-cooking polenta) cooks in 5 to 10 minutes and makes a smoother porridge. Standard polenta cooks in 20 to 40 minutes with a firmer bite. Coarse or stone-ground polenta (Italian bramata) takes 40 to 60 minutes and has the most texture. Corn grits are typically the coarsest and driest form, sold both as polenta and separately as grits for Southern-style breakfast preparations. Instant polenta is precooked and dried, cooks in about a minute, and produces a softer result with less bite.

Sources cover the full range these grinds produce. King Arthur's Ingredient Weight Chart lists Polenta (coarse ground cornmeal) at 5 3/4 oz per cup (163 g, density 0.689 g/mL). USDA Branded Foods Polenta (UPC 802457200282) reports 176 g per metric cup (166 g per US cup, density 0.702 g/mL) — within 2 percent of KA and confirming the middle of the range. Bob's Red Mill offers multiple polenta products with substantially different densities: their standard Yellow Corn Polenta labels 1/4 cup as 40 g (160 g per US cup, density 0.676 g/mL); the Gluten Free Yellow Corn Polenta at the same 40 g per 1/4 cup; the Organic Yellow Corn Polenta at 46 g per 1/4 cup (184 g per US cup, density 0.778 g/mL, presumably a finer or more compacted grind); and the Corn Grits Polenta at 35 g per 1/4 cup (140 g per US cup, density 0.592 g/mL, the coarsest form and matching Kroger's own Polenta label). Total observed spread across Bob's Red Mill alone is 31 percent. Italian imports extend the range further: Cucina & Amore labels 65 g per 1/3 cup (195 g per US cup, density 0.824 g/mL), a bramata-style stone-ground product that lifts the top of the range to nearly 40 percent above the coarsest grits.

The variance is driven by grind coarseness and specific processing. Coarser grinds have larger particles with more void space between them, so a cup holds less by mass. Finer grinds pack more densely because smaller particles nest better. Corn grits, the coarsest form typical in Southern breakfast preparations, sit at the low end (140 g per cup). Standard-grind yellow corn polenta clusters at 160 to 166 g per cup. Fine grinds and Italian bramata-style stone-ground polenta push the high end to 184 to 195 g per cup. Retail labeling rarely specifies grind coarseness beyond a generic polenta or coarse cornmeal name, so a shopper buying polenta cannot reliably predict which grade is inside without checking the nutrition label serving weight.

King Arthur's 163 g per cup sits in the middle of the observed range and is not a correction target here. The chart's figure is legitimate for standard coarse polenta and is confirmed by the USDA Branded record within 2 percent. This entry publishes the full observed range because polenta is genuinely variable across products marketed under the same name, similar to bulgur (grade variance) and steel-cut oats (cut variance) in the site's existing entries.

For recipes calling for polenta by cup, weighing is much more reliable than volume — the difference between the lightest and heaviest published grade is roughly 45 g per cup, enough to change the final texture noticeably. Fine polenta cooks quickly and produces a smoother porridge; coarse or bramata polenta needs longer cooking and produces a more rustic texture with visible grain. When substituting one brand for another by cup measure, weigh the actual serving on a scale rather than trusting the volume equivalence.