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 2850 recipes in total:

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Truchas de Bonaito (White Sweet Potato Pockets)      Origin: Spain	Urunda (Sweet Coconut Balls)      Origin: Sri Lanka	Victorian Chicken Korma      Origin: Anglo-Indian
Tsebhi Shiro (Spicy Peanuts)      Origin: Eritrea	Ut Uncia Laseris Toto Tempore Utaris (How you Can Always Have Laser for Use)      Origin: Roman	Victorian Chicken Malay Dopiaza      Origin: Anglo-Indian
Tsoureki (Greek Easter Bread)      Origin: Greece	Uzum Receli (Grape Jam)      Origin: Turkey	Victorian Dundee Cake      Origin: England
Tuna with Safran and Coconut Milk (Tuna with Cumin and Coconut Milk)      Origin: Seychelles	V'sachy (Pumpkin Leaf Stew)      Origin: Zambia	Victorian Fish Molee      Origin: Anglo-Indian
Tunisian Vegetable Couscous      Origin: Tunisia	Végétarien Kansiyé (Vegetarian Kansiyé)      Origin: Guinea	Victorian Plum Pudding      Origin: Britain
Turbot in Kerala Red Curry Sauce      Origin: India	Vínarterta (Icelandic Layer Cake)      Origin: Iceland	Vincentian and Grenadinian Paime      Origin: Saint Vincent
Turkey Leftovers Hotpot      Origin: Britain	Vadouvan Chicken Curry      Origin: France	Vindaloush with Fungee      Origin: Caribbean
Turkey Rendang      Origin: Fusion	Vadouvan Curry Powder      Origin: France	Virgin Eggnog      Origin: Britain
Turkey, Squash and Cranberry Ravioli      Origin: Britain	Vakalolo      Origin: Fiji	Vitumba (Rice Cupcakes)      Origin: Tanzania
Turkish Baharat      Origin: Turkey	Valentine Flower Salad with Champagne Vinaigrette      Origin: Britain	Vulvulae Isiciatae (Forcemeat for Sow's Womb)      Origin: Roman
Turkish Delight      Origin: Turkey	Valentine's Day Chocolate Cheesecake      Origin: American	Vyannd Cypre of Samon (A Cypriot Dish of Salmon)      Origin: England
Turks and Caicos Bammy      Origin: Turks Caicos	Varo      Origin: India	Vyolette (Violet Pudding)      Origin: England
Turks and Caicos Boil Fish and Grits      Origin: Turks Caicos	Varutharacha Kozhi Curry (Varutharacha Chicken Curry)      Origin: India	Waldorf Hotel's Waldorf Salad      Origin: American
Turks and Caicos Coconut Chicken Curry      Origin: Turks Caicos	Vary sy laoka malagasy (Malagasy Prawn Curry with Vanilla Rice)      Origin: Madagascar	Wali wa Nazi (East African Coconut Rice)      Origin: East Africa
Turks and Caicos Coconut Pie      Origin: Turks Caicos	Vegan Aubergine Dhansak      Origin: India	Walnut and Coffee Fudge      Origin: Britain
Turks and Caicos Curry Powder      Origin: Turks Caicos	Vegan Burritos      Origin: American	Walnut Catsup      Origin: British
Turks and Caicos Jerk Seasoning Paste      Origin: Turks Caicos	Vegan Gluten-free Christmas Cake      Origin: Britain	Walnut Clusters      Origin: Britain
Turks and Dry Jerk Seasoning Blend      Origin: Turks Caicos	Vegeta Seasoning Substitute      Origin: North Macedonia	Walnut Ketchup I      Origin: Britain
Turnip Puff      Origin: American	Vegetable Pilau      Origin: India	Walnut Nougat      Origin: Britain
Turrón de Alicante (Alicante Nougat)      Origin: Spain	Vegetable Potjie      Origin: Botswana	Walnut Praline Ice Cream      Origin: British
Turron de Jijona (Jijona Nougat)      Origin: Spain	Vegetable Seekh Kebab      Origin: India	Walnut Shortbread      Origin: Britain
Tutu (Cornmeal Porridge with Black-eyed Peas)      Origin: Aruba	Vegetarian Chow Mein      Origin: Fusion	Warm Chocolate Pie      Origin: Anguilla
Tutu      Origin: Bonaire	Vegetarian Haggis      Origin: Scotland	Wassail      Origin: Britain
Tutu      Origin: Curacao	Vegetarian Pot Roast      Origin: Britain	Watercress and Cobnut Soup      Origin: Britain
Twelfth-night Cake      Origin: Britain	Venezuelan Chocolate Marquesa      Origin: Venezuela	Wattakka Soup (Pumpkin Soup)      Origin: Sri Lanka
Twenty-five Centimetre Pumpkin Pie      Origin: American	Venison and Dark Chocolate Chili      Origin: Fusion	West African Couscous      Origin: West Africa
Tyropatinam (Baked Custard)      Origin: Roman	Venison Liver Pâté      Origin: Britain	West African Curry Powder      Origin: West Africa
Udang Masak Lemak Nenas (Pineapple Prawn Curry)      Origin: Malaysia	Venison Rissole      Origin: Britain	West African Fish Rub      Origin: West Africa
Ukkarai      Origin: India	Ventrem Plenum (Stuffed Pig's Stomach)      Origin: Roman	West African Meat Kebabs      Origin: West Africa
Uli Petataws (Sweet Potato Fritters)      Origin: Indonesia	Verdolagas (Mexican Common Purslane)      Origin: Mexico	West Indian Cake      Origin: British
Um Ali (Puff Pastry Milk Pudding)      Origin: Kuwait	Vermont Maple Spice Cupcakes      Origin: American	West Sumatran Fish Curry      Origin: Sumatra
Unakkameen Thenga Chammanthy (Dry Fish Chutney)      Origin: India	Vermouth di Torino (Turin Vermouth)      Origin: Italy	Wethani Kyet (Dry Burmese Pork Curry)      Origin: Myanmar
Untú de Peixe (Deep-fried Fish Balls)      Origin: Guinea-Bissau	Vert desire      Origin: England
Urap (Steamed Vegetables with Coconut)      Origin: Brunei	Verulam-style Curried Jackfruit      Origin: South Africa

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