Most seeds come from fruit that naturally free themselves from the shell, but this is not the case in nuts such as hazelnuts, chestnuts, and acorns, which have hard shell walls and originate from a compound ovary. The general and original usage of the term is less restrictive, and many nuts (in the culinary sense), such as almonds, pistachios, and Brazil nuts, are not nuts in a botanical sense. Common usage of the term often refers to any hard-walled, edible kernel as a nut. Nuts are an energy-dense and nutrient-rich food source.

Botanically, a nut is a fruit with a woody pericarp developing from a syncarpous gynoecium. True nuts include, for example, chestnut, hazelnut and filbert. Culinarily, the term 'nut' is used much more widely, and includes examples of drupes (such as pecans and almonds) or seeds (such as pine nuts and peanuts).

Also widely known as nuts are dry drupes, which include pecans, almonds, macadamia (Macadamia integrifolia), candlenut (Aleurites moluccanus) and the water caltrop (Trapa bicornis). A drupe is an indehiscent fruit that has an outer fleshy part consisting of the exocarp, or skin, and mesocarp, or flesh, which surround a single pit or stone, the endocarp with a seed (kernel) inside. In a dry drupe, the outer parts dry up and the remaining husk is part of the ovary wall or pericarp, and the hard inner wall surrounding the seed represents the inner part of the pericarp.

Walnuts and hickories (Juglandaceae) have fruit that are difficult to classify. They are considered to be nuts under some definitions but are also referred to as drupaceous nuts.

In common use, a "tree nut" is, as the name implies, any nut coming from a tree. This most often comes up regarding food allergies; a person may be allergic specifically to peanuts (which are not tree nuts but legumes), whereas others may be allergic to the wider range of nuts that grow on trees.

The sweet potato arrived in Europe with the Columbian exchange. It is recorded, for example, in Elinor Fettiplace's Receipt Book, compiled in England in 1604.

Nuts are eaten by humans and wildlife. Because nuts generally have a high oil content, they are a significant energy source. Many seeds are edible by humans and used in cooking, eaten raw, sprouted, or roasted as a snack food, ground to make nut butters, or pressed for oil that is used in cooking and cosmetics.

Nuts used for food are a common source of food allergens. Reactions can range from mild symptoms to severe ones, a condition known as anaphylaxis, which can be life-threatening. The reaction is due to the release of histamine by the body in response to an allergen in the nuts, causing skin and other possible reactions. Many experts suggest that a person with an allergy to peanuts should avoid eating tree nuts, and vice versa.

The nuts linked to from this page are: acorn; almond; beech nuts; betel nut; brazil nut; bush mango; filbert; ginkgo nut; kola nut; candlenut; cashew; chestnut; coconut; hazelnut; macadamia; ogbono; palm nut; peanut; pecan; pine nut; pistachio; walnut.

The alphabetical list of all the nut-based recipes on this site follows, (limited to 100 recipes per page). There are 2833 recipes in total:

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Peixinhos da Horta (Deep Fried Battered Beans)      Origin: Portugal	Pineappleweed Jelly      Origin: Scotland	Poisson Yassa Mauritanienne (Mauritanian Fish Yassa)      Origin: Mauritania
Peli Rwm Nadolig (Christmas Rum Balls)      Origin: Welsh	Pineappleweed Skolebrød      Origin: Britain	Poissons en sauce aux arachides (Fish in Groundnut Sauce)      Origin: Gabon
Penang Prawn Curry      Origin: Thailand	Pintade de Guinée (Guinean Guineafowl)      Origin: Guinea	Poke      Origin: Cook Islands
Penang-style Nyonya Fish Curry      Origin: Malaysia	Pioniono de Arquipe y Coco (Dulce de Leche and Coconut Roll)      Origin: Colombia	Pokerounce      Origin: England
Penfras Cymraeg Wedi Pobi (Welsh Cod Bake)      Origin: Welsh	Piragua      Origin: Puerto Rico	Pol Sambol      Origin: Sri Lanka
Pennywise Fruit Cake      Origin: British	Pisam Farsilem (Pressed Peas)      Origin: Roman	Polenta Cake      Origin: British
Penwaig Wedi Stwffio (Stuffed Herring)      Origin: Welsh	Pisces Scorpiones Rapulatos (Scorpion Fish with Turnips in Saffron Sauce)      Origin: Roman	Pollo al Curry con Pasas y Piñones (Chicken Curry with Raisins and Pine Nuts)      Origin: Spain
Penwaig wedi Stwffio (Stuffed Herring)      Origin: Welsh	Pista Kulfi (Pistachio Ice Cream)      Origin: India	Pollo con Salsa de Cacahuetes (Chicken with Peanut Sauce)      Origin: Equatorial Guinea
Penzance Cake II      Origin: England	Pistachio and White Chocolate Burfi      Origin: Anglo-Indian	Pollo Mexicana (Chicken Mexicana)      Origin: Mexico
Pepper Chicken      Origin: Sierra Leone	Pistachio and Yoghurt Cake      Origin: Britain	Pom      Origin: Suriname
Pepper Pasta Pie      Origin: South Africa	Pistachio Dukkah      Origin: Australia	Ponche de Creme      Origin: Trinidad
Pepper Soupe de Poisson (Fish Pepper Soup)      Origin: Cameroon	Pistachio Fudge      Origin: American	Poné de Cassave (Cassava Pone)      Origin: French Guiana
Perch Benachin      Origin: Gambia	Pistachio Nut Pâté      Origin: Spain	Poné de Citrouille (Pumpkin Pone)      Origin: French Guiana
Pesach Chremslach (Fruit and Nut Fritters for Passover)      Origin: Jewish	Pitcaithly Bannocks      Origin: Scotland	Poné de Citrouille (Pumpkin Pone)      Origin: Guyana
Peshwari Naan      Origin: India	Pittu      Origin: Sri Lanka	Poppy Seed Kolache      Origin: Croatia
Peson of Almayne (German Peas)      Origin: England	Plain Pickled Fiddleheads      Origin: Canada	Poppyseed Kolaches      Origin: Czech
Pesto Bara Lawr a Garlleg Gwyllt (Laverbread and Wild Garlic Pesto)      Origin: Welsh	Plantain Gingerbread      Origin: Liberia	Porcellum Coriandratum (Suckling Pig with Coriander Sauce)      Origin: Roman
Pesto Gwymon (Seaweed Pesto)      Origin: Welsh	Plantains in Coconut Milk      Origin: South Africa	Porcellum Farsilem Duobus Generis (Suckling Pig, Stuffed in Two Ways)      Origin: Roman
Pesto Petiolata      Origin: Italy	Plat Tradicional Fula (Traditional Fulani Dish)      Origin: Guinea-Bissau	Porcellum Hortulanum (Suckling Pig Stuffed with Garden Vegetables)      Origin: Roman
Petits Gâteaux au Sureau (Elderberry Muffins)      Origin: Switzerland	Plum Cake      Origin: Britain	Porcellum Lasaratum (Suckling Pig Seasoned with Laser)      Origin: Roman
Peynirli Künefe (Turkish Cheesecake)      Origin: Turkey	Plum Crumble      Origin: British	Pork and Sage Kebabs      Origin: Britain
Piña Colada Cupcakes      Origin: Britain	Plum Duff      Origin: England	Pork and Wild Food Curry      Origin: Britain
Picau ar y Maen II (Welsh Cakes II)      Origin: Welsh	Plum Muffins (Plum Muffins)      Origin: Britain	Pork Sparerib Soup      Origin: Fusion
Pickled Spiced Acorns      Origin: Britain	Plum Traybake Slices      Origin: Britain	Port of Spain Crabs and Dumplings      Origin: Trinidad
Pig Tail Bouillon with Dumplings      Origin: Saint Lucia	Pó de Caril São Tomé (Sao Tomean Curry Powder)      Origin: Sao Tome	Potage Congolaise (Congolese Soup)      Origin: Congo
Pigeon Breast with Red Wine Gravy, Roast Leeks and Wild Mushrooms      Origin: Britain	Pochee (Poached Eggs)      Origin: England	Potage Fene Boiles (A Broad Bean Pudding)      Origin: England
Pilaf-Stuffed Onions      Origin: Middle East	Podin Bara Amenyn (Bread and Butter Pudding)      Origin: England	Potage of Rice      Origin: England
Pinafal wedi Piclo (Pickled Pineapples)      Origin: Welsh	Podin Henlys (Helston Pudding)      Origin: England	Potato and Broccoli Gratin with Goat's Cheese      Origin: Ireland
Pindasaus (Dutch Peanut Sauce)      Origin: Netherlands	Podin Nadelik (Cornish Stout and Marmalade Christmas Pudding)      Origin: Britain	Potato and Onion Flan      Origin: Ireland
Pineapple and Carnation Fruit Cake      Origin: Britain	Poha Chivda (Cabbage Chivda)      Origin: India	Potato Cakes with Mango Sauce      Origin: Ireland
Pineapple Pudding      Origin: India	Poisson au Fúmbwa (Fish with Fumbwa)      Origin: Central African Republic	Potato Candy      Origin: Britain
Pineapple Pulissery      Origin: India	Poisson aux Coco (Coconut Fish)      Origin: Tanzania	Potato Cream Cake      Origin: Britain
Pineapple Rasmalai      Origin: India	Poisson Farci à la Saint-Louisienne (Stuffed Fish, in the Manner of St Louis)      Origin: Senegal
Pineappleweed and Coconut Ice Lollies      Origin: Britain	Poisson Yassa (Fish Yassa)      Origin: Senegal

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