Pistachio
Pistacia vera · Anacardiaceae · also known as Pistachio nut, Pista
A desert-hardy Western Asian tree nut, botanically the seed of a drupe. Its shell splits open as the kernel grows, and it is harvested by shaking the trees in late summer. The United States, Turkey and Iran grow most of the world's crop.
At a glance
- Taste
- Mild, sweet and resinous-nutty, with a buttery texture and a faint green, almost grassy note. Roasting deepens it and brings out the sweetness.
- Origin
- Western Asia and Asia Minor; wild pistachio stands still grow in north-east Iran and Afghanistan, where it has been cultivated for some 3,000–4,000 years
- Grown in
- United States, Turkey, Iran, Syria
- Peak season
- Summer, Autumn
- Notable varieties
- Kerman, Golden Hills, Lost Hills, Peters (male pollinator)
Sensory & practical profile
Taste fingerprint
- Sweetness
- Tartness
- Aroma
- Juiciness
- Firmness
Approximate, at peak ripeness · 0–5
- Ripe when
- The outer hull loosens and the shell inside splits open; in California that happens from late August or early September.
- How to eat
- Prise open the split shell with your thumbnails, or use one empty half-shell as a lever on the next. Eat the kernel raw or roasted, or grind it for pastries and ice cream.
The split shell is the point. As the kernel keeps growing through August it forces the shell open on the tree, which is why closed pistachios are usually the ones with a poorly developed kernel inside.
When it's in season, by region
| Region | Peak months |
|---|---|
| North America | Late Aug–Oct (California harvest, 6–8 weeks) |
How to select & store
Picking a ripe one
Choose nuts whose shells have split naturally, with green-to-yellow kernels showing. Closed shells usually hold an underdeveloped kernel. Avoid any with a stale, painty smell, which means the oil has gone rancid.
Storing it
Keep them airtight in a cool, dark place for a few weeks, or in the fridge or freezer for months. Their oil turns rancid with warmth and light.
Practical uses
🍽️ Culinary
- Roasted and salted in the shell as a snack
- Ground for baklava, kunafa and other Middle Eastern pastries
- Pistachio gelato and ice cream, and Indian kulfi
- Studded into mortadella, nougat and terrines
- Pistachio cream and paste for spreads and fillings
🎎 Cultural
- Kerman province and the Rafsanjan district are the historic heart of Iranian pistachio growing
- The trees are male or female, so orchards plant pollinator males such as 'Peters' among the female 'Kerman' trees
Eating pistachio: what to know
What regular consumption looks like
Pistachio is a nutritious everyday fruit, best enjoyed as part of a varied diet. It is high in fibre (about 10.6 g per 100 g), which supports healthy digestion and regularity and helps you feel full. It supplies useful potassium (about 1025 mg per 100 g), a mineral linked with healthy blood pressure as part of a balanced diet. It is unusually rich in (mostly unsaturated) fat for a fruit — about 45.32 g per 100 g — making it energy-dense and satiating.
Sensible amounts
A typical fruit serving is roughly a handful, one medium fruit, or about 80 g, and two or more varied fruit servings a day is a sensible everyday pattern. Because it is energy-dense, keep portions modest if you are watching blood sugar or weight — whole fruit's fibre softens the sugar hit, but juices and dried forms concentrate it and are easy to over-eat. If you are not used to high-fibre foods, build up gradually and drink plenty of water to avoid bloating or wind.
Evidence & conditions
As a whole fruit, Pistachio contributes fibre, vitamins, and beneficial plant compounds, but it has not been shown to treat or prevent any specific condition — so it is best enjoyed as part of a healthy diet rather than as a remedy.
Safety notes
- It is high in potassium, so people with advanced kidney disease or on potassium-restricting medication may need to limit it.
- It belongs to the mango/cashew family: the sap and skin contain urushiol (the poison-ivy irritant) and can cause an itchy rash in sensitive people, though the ripe flesh is fine. Those allergic to cashew, pistachio, or poison ivy should be cautious handling it.
Pistachio: frequently asked questions
What does pistachio taste like?
Mild, sweet and resinous-nutty, with a buttery texture and a faint green, almost grassy note. Roasting deepens it and brings out the sweetness.
When is pistachio in season?
Pistachio is typically in season North America (Late Aug–Oct (California harvest, 6–8 weeks)). Peak months shift between the northern and southern hemispheres.
How do you eat pistachio?
Prise open the split shell with your thumbnails, or use one empty half-shell as a lever on the next. Eat the kernel raw or roasted, or grind it for pastries and ice cream.
How do you know when pistachio is ripe?
The outer hull loosens and the shell inside splits open; in California that happens from late August or early September.
Is pistachio good for you?
Pistachio is a nutritious everyday fruit, best enjoyed as part of a varied diet. It is high in fibre (about 10.6 g per 100 g), which supports healthy digestion and regularity and helps you feel full. It supplies useful potassium (about 1025 mg per 100 g), a mineral linked with healthy blood pressure as part of a balanced diet. It is unusually rich in (mostly unsaturated) fat for a fruit — about 45.32 g per 100 g — making it energy-dense and satiating.
How much pistachio should you eat?
A typical fruit serving is roughly a handful, one medium fruit, or about 80 g, and two or more varied fruit servings a day is a sensible everyday pattern. Because it is energy-dense, keep portions modest if you are watching blood sugar or weight — whole fruit's fibre softens the sugar hit, but juices and dried forms concentrate it and are easy to over-eat. If you are not used to high-fibre foods, build up gradually and drink plenty of water to avoid bloating or wind.
The pistachio is a fruit in the botanical sense. Pistacia vera bears small drupes in clusters, like the mango and the cashew apple, its relatives in the Anacardiaceae. A soft outer hull covers a hard shell, and the “nut” inside that shell is the seed. The tree is native to Western Asia and Asia Minor, and it has been cultivated in Iran, Turkmenistan and Afghanistan for thousands of years.
When are pistachios harvested?
In California, harvest starts in late August or early September and runs around the clock for six to eight weeks, so it is over by October. The kernel keeps growing through August until it splits the shell open on the tree. Trees are harvested by mechanical shaking, and the hulls are removed at the huller shortly afterwards. Pistachio trees are alternate-bearing: a heavy year tends to be followed by a light one.
Dried pistachios, shelled or in the shell, are sold all year; the harvest window is what governs fresh supply.
Who grows them
USDA’s February 2025 forecast for 2024/25 puts the United States first, at about 503,000 tonnes in-shell, ahead of Turkey (385,000 t) and Iran (200,000 t). Syria (55,000 t) and the European Union (35,000 t) follow. Almost all American pistachios come from California, with small amounts from Arizona and New Mexico.
Varieties
The trees are dioecious, meaning each tree is either male or female. Female trees bear the crop and male trees supply the pollen. In California the main female cultivar is Kerman, released in 1957, and the main pollinator is Peters. Newer females include Golden Hills (released in 2005) and Lost Hills.
Nutrition
Per 100 g of raw kernels, USDA SR Legacy lists 560 kcal, 45.3 g fat, 20.2 g protein, 10.6 g fibre and 1,025 mg potassium. That makes the pistachio one of the oil-rich, nut-like entries on this site, alongside the coconut and sapucaia. Unlike most fruit, it is eaten by the handful rather than by the bowl.
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