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 4197 recipes in total:

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Stir-fried Clams in Black Bean Sauce      Origin: Hong Kong	Supoesi (Papaya and Tapioca Soup)      Origin: Samoa	Tafell Fricyll a Cheirch (Apricot and Oat Slice)      Origin: Welsh
Stir-fry of Noodles with Hogweed and Ribwort Plantain Flower Buds      Origin: Britain	Supoesi (Papaya and Tapioca Soup)      Origin: American Samoa	Tagine Almaaz bil Beleh (Goat Tagine with Dates)      Origin: Morocco
Stockfish Stew      Origin: Nigeria	Surun Cyffaith Poeth (Hot Sour Confection)      Origin: Welsh	Tagine bel Ghamli wal Barkouk wa Geijlane (Lamb Tagine with Prunes and Sesame Seeds)      Origin: Morocco
Stovies      Origin: Scotland	Suya Curry      Origin: Fusion	Tagine Lahm bil Beleh (Lamb Tagine with Dates)      Origin: Morocco
Strawberry Ambrosia Muffins (Strawberry Ambrosia Muffins)      Origin: American	Svekla Pkhali (Beet Pkhali)      Origin: Georgia	Tagine of Lamb with Pumpkin      Origin: North Africa
Strawberry and Daisy Sponge Cake      Origin: Britain	Swazi Babotie      Origin: eSwatini	Tahin (Coconut Candy)      Origin: Tahiti
Strawberry and Macadamia Blondies      Origin: Britain	Sweet and Sour Noodles with Chicken      Origin: China	Tahitian Fish      Origin: Norfolk Island
Strawberry Blancmange      Origin: Britain	Sweet and Sour Vegetables on Noodle Pancakes      Origin: China	Tähroro (Fermented Coconut Sauce)      Origin: Rotuma
Strawberry Knotweed Pie      Origin: Britain	Sweet Chestnut Flour, Hazelnut and Chocolate Cake      Origin: Italy	Tai Monomono (Fermented Coconut Sauce)      Origin: Cook Islands
Strawberry Phirni      Origin: India	Sweet Chestnut Soup      Origin: British	Taioro      Origin: Tahiti
Street Food Pad Thai      Origin: Thailand	Sweet Coconut Pumpkin with Pandan Leaves      Origin: Kiribati	Tajine de chameau aux abricots secs (Camel tagine with dried apricots)      Origin: Mali
Stuffed Breadfruit II      Origin: Trinidad	Sweet Koskosi Dessert (Egyptian Sweet Couscous Dessert)      Origin: Egypt	Tajine de Poulet au Miel et Abricots (Chicken Tagine with Honey and Apricots)      Origin: Morocco
Stuffed Hake with Mushroom Gravy      Origin: African Fusion	Sweet Potato and Coconut Soup      Origin: Pitcairn Islands	Tajine de Poulet aux Dattes (Tagine of Chicken with Dates)      Origin: Morocco
Stuffed Nasturtium Leaves      Origin: Fusion	Sweet Potato and Peanut Curry      Origin: Fusion	Takihi      Origin: Niue
Stuffed Parasol Caps      Origin: Britain	Sweet Potato Brownies      Origin: Britain	Talautu (Coconut and Pineapple Dessert)      Origin: Papua New Guinea
Stuffed Poussin with Madeira Sauce      Origin: Britain	Sweet Potato Casserole      Origin: Bermuda	Tam Som (Lao Green Papaya Salad)      Origin: Laos
Stuffed Roast Chicken for Passover      Origin: Jewish	Sweet Potato Ice Cream      Origin: American	Tamil Nadu Meat Curry Powder      Origin: India
Stuffed Tomato Parcels      Origin: Britain	Sweet Potato Pudding      Origin: Saint Kitts	Tamina (Semolina Dessert)      Origin: Niger
Sua Alaisa (Samoan-style Rice Pudding)      Origin: Samoa	Sweet Potatoes Stuffed with Cranberry Sauce      Origin: American	Tandoori Chicken      Origin: India
Sua Pana      Origin: Rotuma	Sweet Potatoes with Groundnuts      Origin: Zambia	Tandoori Masala      Origin: India
Sua Pofo      Origin: Rotuma	Sweet Sattu      Origin: India	Tankora Powder      Origin: Ghana
Suafa’i (Samoan Hot Banana and Sago Pudding)      Origin: Samoa	Sweet Woodruff and Marzipan Cake      Origin: Britain	Tannia and Pineapple Fritters      Origin: Saint Kitts
Subliwal (Pumpkin Rice Pudding)      Origin: Palau	Sweetbread Croquets      Origin: British	Tanzanian Coconut Bean Soup      Origin: Tanzania
Sudanese Basbousa      Origin: Sudan-a	Sweetbread Croquettes      Origin: British	Tanzanian Pineapple Salad      Origin: Tanzania
Suet Pudding      Origin: Britain	Swffle Bara Lawr (Laverbread Soufflé)      Origin: Welsh	Tanzanian Plantain Curry      Origin: Tanzania
Suet-less Mincemeat      Origin: Britain	Swiss-style Muesli      Origin: Switzerland	Tapado (Seafood Soup)      Origin: Guatemala
Sugar Cake      Origin: Saint Kitts	Syrian Baharat      Origin: Syria	Tapioca      Origin: Nigeria
Sugar Plums      Origin: Britain	Syrip for a Capon or Faysant (Sauce for Capon or Pheasant)      Origin: England	Taramasalata      Origin: Greece
Sun and Moon Biscuits      Origin: Britain	Szechuan Fried Aubergine      Origin: China	Taro aux Fruits de Mer (Taro with Seafood)      Origin: Cote dIvoire
Sun-dried Tomato and Garlic Pesto      Origin: Italy	Szechuan-style Pork and Pepper      Origin: China	Taro Leaf Stew      Origin: Pitcairn Islands
Sunday Bread      Origin: Antigua	S’Aranzada (Sardinian candied orange and almond balls)      Origin: Italy	Taro Poi      Origin: Tuvalu
Sunday Stew      Origin: Nigeria	Tabah Moostafah (Tagine of Marrakech Lamb)      Origin: Morocco	Taro Pudding      Origin: Tuvalu
Sunflower and Peanut Halva      Origin: Russia	Taco-topped Cupcakes      Origin: America
Superlative Mincemeat      Origin: Britain	Tadjine Zdef (Mutton and Cheese Tagine)      Origin: Benin

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