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 4553 recipes in total:

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Tourment d'Amour (Love's Torment)      Origin: Guadeloupe	Tsiren Dakakken Nama (Spicy Mince Meat Kebabs)      Origin: Nigeria	Ube Halaya (Purple Yam Dessert)      Origin: Philippines
Tourta de Blea (Chard Pie)      Origin: Monaco	Tsoureki (Greek Easter Bread)      Origin: Greece	Udang Masak Lemak Nenas (Pineapple Prawn Curry)      Origin: Malaysia
Tourtes parmeriennes (Parmesan Pies)      Origin: France	Tuna with Safran and Coconut Milk (Tuna with Cumin and Coconut Milk)      Origin: Seychelles	Ukaeb (Minced Crab with Coconut Cream)      Origin: Palau
Towcester Cheesecakes      Origin: England	Tunisian Vegetable Couscous      Origin: Tunisia	Ukkarai      Origin: India
Towering Praline Carrot Cake      Origin: American	Turbot à la Parisienne      Origin: British	Uli Petataws (Sweet Potato Fritters)      Origin: Indonesia
Tozzetti della Tuscia (Hazelnut Biscotti)      Origin: Italy	Turbot in Kerala Red Curry Sauce      Origin: India	Ulkoy (Filipino Shrimp Patties)      Origin: Philippines
Traditional Apple Pie      Origin: British	Turkey Leftovers Hotpot      Origin: Britain	Ulkoy (Palauan Shrimp Patties)      Origin: Palau
Traditional Black Bun      Origin: Scotland	Turkey Pudding      Origin: British	Um Ali (Puff Pastry Milk Pudding)      Origin: Kuwait
Traditional Brandy Butter Sauce      Origin: Britain	Turkey Rendang      Origin: Fusion	Umm Ali (Puff Pastry Milk Pudding)      Origin: Qatar
Traditional Bread and Butter Pudding      Origin: Britain	Turkey, Squash and Cranberry Ravioli      Origin: Britain	Unakkameen Thenga Chammanthy (Dry Fish Chutney)      Origin: India
Traditional Historic Bobotie      Origin: South Africa	Turkish Baharat      Origin: Turkey	Untú de Peixe (Deep-fried Fish Balls)      Origin: Guinea-Bissau
Traditional Jerk Pork      Origin: Jamaica	Turkish Delight      Origin: Turkey	Urap (Steamed Vegetables with Coconut)      Origin: Brunei
Traditional Mattar Keema Curry      Origin: India	Turks and Caicos Bammy      Origin: Turks Caicos	Urap Sayur (Blanched Vegetable Salad with Spiced Coconut Topping)      Origin: Indonesia
Traditional Mincemeat      Origin: Britain	Turks and Caicos Boil Fish and Grits      Origin: Turks Caicos	Urnebes Salad      Origin: North Macedonia
Traditional Thai Jungle Curry      Origin: Thailand	Turks and Caicos Coconut Chicken Curry      Origin: Turks Caicos	Urunda (Sweet Coconut Balls)      Origin: Sri Lanka
Tranches d'arbre à pain frites (Fried Breadfruit Slices)      Origin: Wallis Futuna	Turks and Caicos Coconut Pie      Origin: Turks Caicos	Uszka (Polish Christmas Dumplings)      Origin: Poland
Traou Mad (Breton Macaroons)      Origin: France	Turks and Caicos Curry Powder      Origin: Turks Caicos	Ut Uncia Laseris Toto Tempore Utaris (How you Can Always Have Laser for Use)      Origin: Roman
Traybake Keralan Fish Curry      Origin: Fusion	Turks and Caicos Jerk Seasoning Paste      Origin: Turks Caicos	Uter (Sweet Taro and Coconut Balls)      Origin: Federated States Micronesia
Tricolour Pilau Rice      Origin: India	Turks and Dry Jerk Seasoning Blend      Origin: Turks Caicos	Uzum Receli (Grape Jam)      Origin: Turkey
Trieste Style Štruklji      Origin: Slovenia	Turn Cornmeal      Origin: British Virgin Islands	V'sachy (Pumpkin Leaf Stew)      Origin: Zambia
Trifle to Die For      Origin: England	Turnip Puff      Origin: American	Végétarien Kansiyé (Vegetarian Kansiyé)      Origin: Guinea
Trini Coconut Sweet Bread      Origin: Trinidad	Turquía Mole Poblano (Turkey with Poblano Chocolate Mole)      Origin: Mexico	Vínarterta (Icelandic Layer Cake)      Origin: Iceland
Trini Sugar Cake      Origin: Trinidad	Turrón de Alicante (Alicante Nougat)      Origin: Spain	Vadouvan Chicken Curry      Origin: France
Trinidad Chicken Pelau      Origin: Trinidad	Turron de Jijona (Jijona Nougat)      Origin: Spain	Vadouvan Curry Powder      Origin: France
Trinidad Crab and Callaloo      Origin: Trinidad	Tutu      Origin: Bonaire	Vaihalo Tokelau (Green Coconut Porridge)      Origin: Tokelau
Trinidad Paime      Origin: Trinidad	Tutu      Origin: Curacao	Vakalolo      Origin: Fiji
Trinidadian Black Cake      Origin: Trinidad	Tutu (Cornmeal Porridge with Black-eyed Peas)      Origin: Aruba	Valentine Flower Salad with Champagne Vinaigrette      Origin: Britain
Trinidadian Curried Goat      Origin: Trinidad	Tuvalu Tuna Curry      Origin: Tuvalu	Valentine's Day Chocolate Cheesecake      Origin: American
Triopita (Greek Cheese Pie)      Origin: Greece	Tuvaluan Coconut Bread      Origin: Tuvalu	Varo      Origin: India
Tripe and Onions      Origin: England	Tuvaluan Crab Curry      Origin: Tuvalu	Varutharacha Kozhi Curry (Varutharacha Chicken Curry)      Origin: India
Tripe with Tatties      Origin: Scotland	Tuvaluan Fish Curry      Origin: Tuvalu	Vary sy laoka malagasy (Malagasy Prawn Curry with Vanilla Rice)      Origin: Madagascar
Trout à L'Aurore      Origin: British	Twelfth-night Cake      Origin: Britain	Vasilopita (New Year Cake)      Origin: Cyprus
Truchas de Bonaito (White Sweet Potato Pockets)      Origin: Spain	Twenty-five Centimetre Pumpkin Pie      Origin: American
Tsebhi Shiro (Spicy Peanuts)      Origin: Eritrea	Tyropatinam (Baked Custard)      Origin: Roman

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