Poppy Seeds: Flavor, Uses, Opium Alkaloids and Where They Grow

The seeds on your bagel come from the opium poppy, Papaver somniferum. They taste mild and nutty, they put the crunch on breads and rolls, and ground with sugar they become the dense, dark filling of Central and Eastern European pastries. The same plant gives opium from its unripe seed pods, so poppy seeds carry a contaminant limit in the EU, and a big helping can show up on a drug test.

At a glance

What poppy seeds are

The opium poppy is an annual with lobed or toothed silver-green leaves and large blue-purple or white flowers. It makes lots of small, kidney-shaped seeds, grayish blue to dark blue. Britannica lists them as edible and nonnarcotic, used in baking, for seasoning, for oil and as birdseed.²

Opium is something else. It’s the dried latex from the unripe seed capsules, not the seed.

Blue, gray and white seed

The dark seed you know from Western baking is the usual type. The regular seed is also described as gray, and there’s a white type associated with India, plus a crème-white variety bred for light-colored sauces. Which color a recipe wants comes down mostly to looks and tradition. None of the sources we checked compare their flavor.

Flavor and aroma

Katzer sums up the taste as “nutty and pleasant.” The volatile compounds reported in the seed include aliphatic hydrocarbons and aldehydes, with 2-pentylfuran identified as a key aroma compound. The nuttiness grows when seeds sprinkled on breads and pastries are baked.³

Raw, the seed is subtle. On a roll or a muffin, it’s mostly there for the crunch.

Where it comes from

Sources disagree on where the opium poppy is native:

It’s introduced in well over a hundred regions worldwide. Poppy has been grown in Europe since the Neolithic, and the ancients prized the cooking oil pressed from its seeds.

History

The documented history in our sources is short. Ancient Greek physicians knew opium’s narcotic and painkilling power, and poppy recipes traveled from Rome to Byzantium and from there into the cuisines of Islamic states in the Near East. Medieval European medicine, on the other hand, didn’t use opium.³

Plenty of popular accounts say the Sumerians first grew the poppy around 3400 BCE, that Egyptian texts from about 1550 BCE describe poppy seed as a sedative, and that a favorite dessert of the Roman gourmet Apicius used poppy seed. We couldn’t trace any of those to a source we could open, so we’re not repeating them as fact.

Production

Most food poppy seed comes from a handful of countries. An economics paper using FAOSTAT data for 2009 put world production at about 100,000 tonnes. Turkey had 34.6% and the Czech Republic 33%, followed by France at 6.6% and then Hungary, Germany, Romania, Austria and Slovakia. The authors call the Czech Republic the main world producer and a price maker, with about 44% of world trade in poppy seed.⁴ By their own production shares, though, Turkey was slightly ahead that year, so think of the two as joint leaders. We didn’t check more recent statistics.

In much of Asia the plant is grown mainly for opium, not food.

How poppy seeds are used

• Central and Eastern Europe. Sweet poppy seed pastries turn up all over the region. In Austria poppy seed is a favorite strudel filling, and Germknödel, steamed yeast dumplings, come with powdered sugar, ground poppy seed and melted butter.
• Jewish baking. Poppy seeds are especially associated with Yiddish baking.
• India. Ground poppy seed is a common thickener in the Mughal cooking style of northern India.
• Japan. The nutty taste suits the subtly flavored dishes typical of Japanese cooking.
• United States. Poppy seeds top bagels, kaiser rolls and muffins, and lemon poppy seed muffins and poppy seed dressing are familiar favorites. See also everything bagel seasoning.

For pastry fillings, the seeds are usually ground first and cooked into a paste. Whole seeds are for texture and decoration.

Nutrition

By weight, poppy seeds are about 42% fat and 18% protein, with 525 kcal per 100 g.⁶ They’re unusually high in calcium. Here are USDA’s figures per 100 g and what they mean in a realistic serving:

We worked out the per-tablespoon values from USDA’s per-100 g figures and its 8.8 g tablespoon weight. Daily Values are the FDA’s (calcium 1,300 mg, magnesium 420 mg, manganese 2.3 mg, fiber 28 g, iron 18 mg).⁶⁷ A teaspoon (2.8 g) holds about 40 mg of calcium, roughly 3% of the Daily Value. Most recipes use poppy seed by the teaspoon or tablespoon, so those are modest amounts. We’re not claiming poppy seeds prevent or treat any condition.

Safety

Opium alkaloids

Poppy seeds themselves have very little alkaloid. Katzer gives about 50 ppm, too low to have any pharmacological effect.³ But the seeds can pick up alkaloids from the plant. EFSA notes they can get contaminated through pest damage and during harvest.⁸

The EU regulates this directly. Under Regulation (EU) 2023/915, whole, ground or milled poppy seeds sold to consumers may contain no more than 20 mg/kg of opium alkaloids, and bakery products with poppy seeds no more than 1.5 mg/kg. The limit is expressed as morphine plus 0.2 times codeine.⁵

EFSA’s contaminants panel confirmed an acute reference dose of 10 micrograms of morphine per kilogram of body weight, counting codeine as morphine equivalents. For seeds from varieties grown mainly for pharmaceutical use, which are high in alkaloids, it found that mean and high dietary exposure went over that dose in most age groups. Even with seeds relatively low in alkaloids, it saw some high consumers go over in most surveys.⁸

We didn’t find a US limit for opium alkaloids in poppy seeds.

Drug tests

Even at normal levels, Katzer notes, morphine can be detected in urine after you eat a lot of poppy seed.³ If you’re facing a drug test, you may want to steer clear of poppy seed foods beforehand.

Buying and storage

We didn’t check for an international grade standard for poppy seed. The seeds are oil-rich (about 42% fat by USDA’s analysis),⁶ and many cooks keep them airtight in the fridge or freezer and give them a sniff before using. Toss any that smell bitter or stale.

Substitutes and comparisons

Sesame seeds can stand in for crunch on breads, though they taste different. See poppy seed substitutes for options by job, and the sesame seeds, black sesame seeds and nigella seeds profiles.