Store pistachios in a clean, airtight container in a cool, dry place away from direct sunlight, heat, and moisture. Shelled pistachios are more exposed to air and may lose freshness faster than pistachios stored in their shells. For longer storage, keep them in the refrigerator or freezer. Because pistachios contain natural oils, prolonged exposure to heat and air may cause them to develop a stale or rancid flavour.

Pistachios can be eaten raw, roasted, salted, chopped, sliced, or ground into a fine powder or paste. Lightly roasting pistachios enhances their nutty aroma and deepens their flavour. For desserts, soak shelled pistachios briefly if a softer texture is needed before blending them into a smooth paste. Add chopped pistachios near the end of cooking when you want to preserve their colour and crunch.

Pistachio trees have grown in West and Central Asia for thousands of years. Archaeological evidence suggests that pistachios were consumed as food as early as around 6750 BCE. They were valued because the nuts could be stored, transported, and eaten without extensive preparation. Pistachios became important foods in ancient Persia and neighbouring regions. Through trade and cultural exchange, pistachio cultivation spread across the Middle East, the Mediterranean, North Africa, and Southern Europe. The Romans are believed to have introduced pistachio trees to parts of Europe during the first century CE.

Pistachios have long been associated with hospitality, celebration, prosperity, and special occasions in many Middle Eastern and Mediterranean cultures. They are important ingredients in Persian, Turkish, Arabic, Greek, Italian, and South Asian food traditions. In India, pistachios are commonly known as pista and are used in festive sweets, desserts, milk-based drinks, ice creams, and rich celebratory dishes. Their distinctive green colour makes them a popular garnish for kheer, kulfi, halwa, barfi, and other traditional desserts.

Pistachios have traditionally been eaten whole, roasted, salted, chopped, or ground into a paste. They have been used as toppings for desserts, mixed into sweets, added to rice dishes, and incorporated into pastries and confectionery. In Indian cuisine, pistachios are often used to garnish kheer, kulfi, falooda, halwa, barfi, and other festive desserts. They may also be added to pulao, biryani, rich gravies, and special-occasion dishes. In Middle Eastern and Mediterranean cuisines, pistachios are commonly used in baklava, pastries, confectionery, meat dishes, sauces, salads, and desserts. Today, pistachio paste is also widely used in ice cream, chocolate, cakes, spreads, and modern desserts.

Pistachios are technically seeds, although they are commonly called nuts. Pistachio trees can live and produce nuts for many decades. The shell naturally splits open as the pistachio matures, creating its familiar opening. Pistachios are sometimes called the “smiling nut” because the open shell resembles a smile. Their green and purple colours come from naturally occurring plant pigments. Pistachios have been eaten for thousands of years and were valued in several ancient cultures. A typical 28g serving contains approximately 49 pistachio kernels. Pistachios are used in both sweet and savoury dishes around the world.

Choose pistachios with a fresh, mildly sweet, nutty aroma. Avoid pistachios that smell sour, oily, stale, or rancid. When buying shelled pistachios, look for kernels with a natural green colour and avoid products that appear excessively dry or damaged. Unsalted, raw, or dry-roasted pistachios are useful when you want greater control over the salt and oil in a recipe. Use whole pistachios for garnishing, chopped pistachios for texture, and finely ground pistachios for desserts, fillings, sauces, and baking. Toast pistachios gently over low to medium heat because they can brown quickly. For the best colour and flavour, add them near the end of cooking. If using pistachios in a paste or cream, blend them gradually and avoid overheating the mixture. People with pistachio or tree-nut allergies should avoid them. Nutritional values may vary depending on whether pistachios are raw, roasted, salted, sweetened, or combined with other ingredients.