Soft golden polenta spread on a round wooden board with sautéed mushrooms, beside a heap of coarse yellow cornmeal and two dried ears of orange corn on a dark wooden table

Polenta: The Complete Guide

September 30, 2026

Polenta is cornmeal cooked in salted water and stirred until it thickens. Maize has been grown in northern Italy for more than four hundred years, and polenta became a staple of its countryside. The Treccani dictionary defines it as a dish of rustic origin made with corn flour in lightly salted water, cooked in a paiolo and stirred continuously until done. It adds that polenta is widespread in Lombardy, the Veneto and Friuli, and was more so in the past, served beside other dishes or, in some places, in place of bread. This guide follows it from the word to the field, the mill and the pot.

The word is older than the corn

Maize is an American plant, but the word polenta is Latin. Treccani traces it to the Latin polenta, meaning barley meal, and relates it to pollen, fine flour, and puls, a thick porridge. The name came to cover thick porridges of other meals too. Treccani still lists polenta nera, a greyish polenta of buckwheat flour typical of Trentino, and a sweet polenta of chestnut flour.

In a study of the Vicenza countryside, the economic historian Giulio Ongaro quotes a local historian on the Agno valley. There, in the early modern period, yellow maize polenta and grey buckwheat polenta both stood out in the peasant diet, and elevation decided between them. Yellow won on the valley floor. Grey held in the hill villages and the high valley. Buckwheat has not left the pot: taragna, a mix of whole corn and buckwheat meals, is typical of the Bergamo valleys and the Valtellina.

How maize reached the paiolo

Ongaro sets out the arrival. Maize reached Spain from the Americas at the beginning of the sixteenth century and the Italian peninsula in the middle of it. The Republic of Venice was quite probably one of the first places to grow it as a field crop rather than a curiosity. Intensive cultivation began in the Province of Rovigo by the mid-sixteenth century and around Este, near Padua, in the 1580s. The famine of the 1590s spread it quickly into the provinces of Treviso and Verona.

In the Province of Vicenza the first records of the new grain date to as early as 1570. By the 1580s and 1590s, Ongaro finds, maize seems to have entered the market: its prices tracked those of the other cereals, and it appeared in tithes and farm contracts. A price series from San Vito di Leguzzano, a village in the province, records it from 1587 as sorgo turco, Turkish sorghum. Ongaro also makes the point that matters for this guide. In the Americas maize was eaten in quite different ways. Milling it into meal and cooking it as polenta is what marked the countryside of northern Italy.

The cost of a one-food diet

In the regions where poor peasants depended too heavily on maize, a disease of that monotonous diet followed. A 2018 review in the South African Journal of Science sets out the Italian record. The disease was formally named pellagra in 1771 by the physician Francesco Frapolli, though the word, meaning rough skin, comes from the Lombard dialect and may have been in popular use earlier. By June 1784 a royal hospital for pellagra patients was operating near Milan. The disease stayed endemic for more than two hundred years in the parts of Italy that depended too heavily on maize. In some areas it affected up to 3 percent of farm workers, and it was worst in the Veneto and Lombardy. It declined from the late nineteenth century into the early twentieth, as the peasantry's economic conditions improved.

The cause took longer to find. Joseph Goldberger's diet studies in American orphanages and an asylum led him and his colleagues to conclude, in 1923, that pellagra "may be completely prevented by diet." In 1937 the disease was traced to a lack of the B vitamin niacin.

The corns

Polenta starts with the corn, and northern Italy kept some of its old varieties. Here are three, with what their records and producers say.

Marano. The Veneto's record of traditional foods names it after Marano Vicentino, about 18 kilometers north of Vicenza. There the agronomist Antonio Fioretti crossed two local maizes in 1890: Pignoletto d'Oro from Caldogno and the Nostrano. He wanted the quality of the first and the yield of the second, on the gravel soils of the Leogra valley. The record describes the kernels as small, glassy and deep orange, set in 12 to 14 rows. The flour is an intense orange flecked with brown and is made as plain, whole and whole stone-ground meal. Marano meal for polenta must be grown and milled in the foothills of the upper Vicentino.

Biancoperla. A white corn with long, tapering cobs and pearly kernels, now a Slow Food Presidium in the provinces of Treviso, Padua, Rovigo and Venice. Slow Food writes that white polenta was more highly regarded and marked a line between the plains and the foothills. In the foothills the hardier yellow corn suited the land better. Higher-yielding hybrids replaced it, but some farmers kept the seed. The Presidium encourages stone grinding.

Otto file. Manicaretti, the US importer of Moretti's polenta, says Moretti starts from otto file, an heirloom corn from the Po valley. The importer also says the corn is husked, dried in temperature-controlled ovens and stone ground with the hull and germ.

Four centuries in dates

When	What happened
Antiquity	Latin polenta means barley meal
Early 1500s	Maize reaches Spain from the Americas
Mid-1500s	Maize reaches Italy and is grown intensively in the Province of Rovigo
1570	First records of maize in the Province of Vicenza
1580s	Maize is grown around Este; in the Province of Vicenza its price begins to track the other cereals
1590s	Famine spreads maize into the provinces of Treviso and Verona
1771	Pellagra is formally named by Francesco Frapolli
1784	By June a royal hospital for pellagra patients is operating near Milan
1890	Antonio Fioretti crosses the corn that becomes Marano
1922	Aristide Moretti takes over a corn mill in Campagnola, Bergamo
1937	Pellagra is traced to a lack of niacin
1989	Moretti adopts vacuum packing for its corn meal

The grinds, and what each is for

Italian polenta meal is sold by grind and by corn. The table uses the descriptions in Moretti's own range.

Meal	What it is	Cooking	What it suits
Fioretto	Fine yellow corn meal, delicate in flavor	Soft, smooth polenta that takes other ingredients easily	Vegetables, white sauces
Bramata	Coarse yellow corn meal of the Bergamo tradition, full and intense in flavor	30 to 45 minutes of stirring, per the importer's directions	Meat, cheese, mushrooms, eggs, truffles
Bramata bianca	Meal of a naturally white corn typical of the Veneto, milder in flavor	-	Fish sauces and fish dishes
Taragna	Whole corn and buckwheat meals, from the Bergamo valleys and the Valtellina	-	Polenta concia, with cheese and butter
Lampo, or instant	Bramata Lampo and Taragna Lampo, quick-cooking versions	A few minutes	A weeknight

The coarse grind is the one to learn first. It is the long-cooking meal, 30 to 45 minutes by the importer's directions. Moretti describes its flavor as full and intense, and it keeps a slight bite even when fully cooked. Moretti bramata (shop Moretti Bramata) is that meal, and the Moretti producer guide covers the Bergamo family that has milled corn since 1922.

Reading an American bag

An American cornmeal label follows the federal standards of identity in 21 CFR Part 137, and two of those terms tell the cook more than any adjective on the front.

Label term	What the standard requires	In the kitchen
White corn meal (yellow corn meal follows the same standard)	Ground from cleaned corn; at least 95 percent passes a No. 12 sieve; if coarse particles are sifted out, the finished meal's fat must stay within 0.3 percent of the corn's	Close to whole ground corn, so most of the oil-bearing germ stays in; the coarser of the two
Degerminated (or degermed) white corn meal	Bran and germ removed; fat under 2.25 percent; at least 95 percent passes a No. 20 sieve	Finer, with the oil-bearing germ taken out

A No. 20 sieve has smaller openings than a No. 12, so degerminated meal is held to a finer grind. A bag labeled white or yellow corn meal, without the word degerminated or degermed, has to stay close to the fat of the whole corn. That suggests most of the oil-bearing germ is still in it, so it is safest to store it like a whole-grain meal.

Cooking it

The importer's directions for Moretti bramata are short. Bring 2 liters of water to a boil, preferably in a copper pot, and add a tablespoon of salt. Pour in the 500 g bag slowly, whisking hard so it does not lump. When the pot bubbles again, lower the heat and stir with a wooden spoon for 30 to 45 minutes. That is four parts water to one part meal by weight. At that ratio the polenta pours thick and sets firm enough to slice once it cools. A splash of hot water at the end loosens it to serve soft. The polenta recipe to learn first works through the half bag, the soft and firm versions, and the next day's fried slices.

Expect a longer cook in Denver. Colorado State University Extension puts the boiling point of water at 203°F at 5,000 feet, against 212°F at sea level. It notes that boiled and simmered foods therefore cook at a lower temperature at elevation and need more time. Dry mountain air also speeds evaporation during cooking. Plan on the long end of the 30 to 45 minutes or beyond, keep a kettle hot for the pot, and judge doneness by taste: tender grains with no raw corn grit. The cooking at altitude guide covers the rest of the kitchen.

What goes on it

Moretti's own pairing list for bramata is meat, cheese, mushrooms, eggs and truffles. Mushrooms are a natural first plate. Dried chanterelles (shop Wine Forest Dried Chanterelles) can be soaked, chopped and cooked down in butter with their strained liquid. A jar of Casina Rossa sugo al porcini (shop Casina Rossa Sugo al Porcini) can be warmed through and spooned over. The polenta with mushrooms recipe builds the whole plate, and the dried mushrooms guide covers the soak. For truffles, the Piedmont in autumn guide covers the season in Lombardy's neighbor to the west.

Beyond mushrooms, a braise or ragù over soft polenta makes it a main course. White polenta goes with fish, as Moretti suggests. Moretti recommends taragna for polenta concia, polenta with cheese and butter. Firm polenta from the night before slices, fries or grills. Polenta is the other stirred pot of the north, beside risotto, and the risotto rice guide covers those grains. The farro guide covers another old Italian grain.

Keeping it

The Whole Grains Council gives whole grain flours and meals 1 to 3 months on a cool, dry shelf in an airtight container, or 2 to 6 months in the freezer. Meals keep less well than intact grains, the Council explains, because grinding breaks up the protective bran and lets oxygen reach the whole grain. The oils in the germ are also sensitive to heat, light and moisture. That window fits a meal that keeps its germ: a stone-ground whole meal, or an American bag labeled white or yellow corn meal without the word degerminated. Moretti says the vacuum packing it adopted in 1989 preserves the meal's qualities and extends its life. Once a bag is open, fold it down tight or move the meal to a jar, and keep it away from the stove.

Gluten

Coeliac UK lists both corn and polenta as gluten free. It also cautions that naturally gluten-free flours can be milled where wheat is milled, and it advises people with coeliac disease to look for flours labeled gluten free.

The shop is at 263 Josephine Street in Cherry Creek, Denver, and products ship nationwide from theambrosianpantry.com.