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 3274 recipes in total:

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Kokada (Bonaire Coconut Candy)      Origin: Bonaire	Kukulu Musamma      Origin: Sri Lanka	Lamb Rogan Josh      Origin: Britain
Kokada (Curaçao Coconut Candy)      Origin: Dominica	Kulfi      Origin: India	Lamb shish with olive and walnut tahini      Origin: Britain
Koko Alaisa (Cocoa Rice Pudding)      Origin: Samoa	Kuli-kuli      Origin: Benin	Lamb Stew with Chestnuts and Pomegranates      Origin: Georgia
Koko na Nyama (Meat with Koko)      Origin: Central African Republic	Kulich (Russian Easter Cake)      Origin: Russia	Lamb Tarkari (Lamb Yoghurt Curry)      Origin: Nepal
Kokoda (Oceanian Ceviche)      Origin: Fiji	Kulich (Russian Easter Bread)      Origin: Russia	Lamb's Lettuce Pesto      Origin: Britain
Kokoda (Fijian Ceviche)      Origin: Fiji	Kulikuli (Peanut Balls)      Origin: Nigeria	Lammfärsfyllda squashbåtar (Lamb-stuffed Squash Boats)      Origin: Sweden
Kokoda (Oceanian Ceviche)      Origin: Papua New Guinea	Kurambiedes (Greek Christmas Biscuits)      Origin: Greece	Lampara Curry      Origin: Sri Lanka
Kokoda (Oceanian Ceviche)      Origin: Solomon Islands	Kutia      Origin: Ukraine	Lao Tam Som (Lao Green Papaya Salad)      Origin: Laos
Kokos Taart (Coconut Tart)      Origin: Sint Eustatius	Kwarezimal (Maltese Lenten Cake)      Origin: Malta	Laplap      Origin: Vanuatu
Kokos Taart (Coconut Tart)      Origin: Sint Maarten	Kwarezimal (Almond Cakes)      Origin: Malta	Laska      Origin: Malaysia
Kokos Taart (Coconut Tart)      Origin: Aruba	Kwerstkhi Nigozee Satsabelly (Egg Salad In Walnut Sauce)      Origin: Georgia	Last-minute Mincemeat Christmas Cake      Origin: Britain
Kokos Taart (Coconut Tart)      Origin: Curaçaoa	Kyazangi Kaukswe (Rice Noodles with Curry)      Origin: Myanmar	Lauki Kofta Curry (Bottle Gourd Kofta Curry)      Origin: India
Kombdi Masala      Origin: India	L'Ham Lahlou (Sweet Lamb for Ramadan)      Origin: Algeria	Launceston Cake      Origin: Britain
Kongodo (Peanut Brittle)      Origin: Equatorial Guinea	La Bouillie      Origin: Chad	Lawves (Walnut Fudge)      Origin: Uzbekistan
Koozy (Leg of Lamb)      Origin: Iraq	La Galette des Rois (Kings Cake)      Origin: France	Le Chao Men (New Caledonian Chaw Mein)      Origin: New Caledonia
Korma Curry Paste      Origin: Britain	La Torta Tre Monti (Sammarinese Three Mountain Cake)      Origin: San Marino	Le Galapian      Origin: Monaco
Korma Masala      Origin: India	Lafet Time (Honey-glazed Pork with Salad)      Origin: Vanuatu	Le gâteau nantais (Nantes cake)      Origin: France
Kosrae Soup (Tuna, Banana and Coconut Milk Soup)      Origin: Federated States Micronesia	Lahm Lhalou (Lamb Stew with Prunes)      Origin: Algeria	Le Me Tsolola      Origin: Comoros
Kotmis Satsivi (Roast Chicken with Walnut Sauce)      Origin: Georgia	Lahmajoun      Origin: Armenia	Le molleux au chocolat (Chocolate Fudge Cake)      Origin: France
Kougin Patatez (Breton Potato Cake)      Origin: France	Lakh      Origin: Senegal	Le Ndolé Camerounais (Cameroonian Ndolé)      Origin: Cameroon
Koumrangan      Origin: Chad	Lakh Mauritanienne      Origin: Mauritania	Le Vitréais, le gâteau aux pommes de Vitré (Vitré Apple Cake)      Origin: France
Kourabiedes (Greek Almond Crescents)      Origin: Greece	Laksa      Origin: Malaysia	Lebanese Sabaa Baharat      Origin: Lebanon
Kozhukattai Payasam      Origin: India	Laksa Paste      Origin: Singapore	Lebanese-style Braaied Fruit Salad      Origin: South Africa
Kozi Ishtu (Keralan Chicken Ishtu)      Origin: India	Laksa Paste      Origin: Malaysia	Leber Knödelsuppe (Liver Dumpling Soup)      Origin: Liechtenstein
Krampez Yar (Cornish Chicken Pie)      Origin: England	Laksa Paste II      Origin: Malaysia	Leche Frys in Lentoun (Almond Milk Fruit Pie)      Origin: England
Kransekage Konfekt (Almond Allsorts)      Origin: Denmark	Lamb and Apricot Cape Malay Curry      Origin: South Africa	Leche Lumbard (Lombardy Cream)      Origin: England
Kransekage Stænger (Danish Almond Sticks)      Origin: Denmark	Lamb and Cabbage Rolls      Origin: Britain	Leftover Porridge Muffins      Origin: Scotland
Kubecake      Origin: Ghana	Lamb Biryani      Origin: Britain	Leftover Turkey and Chickpea Curry      Origin: Fusion
Kuddelfleck (Tripe)      Origin: Luxembourg	Lamb Biryani      Origin: India	Leftover Turkey Fricassee      Origin: Scotland
Kujja Kulfi (Saffron and Nut Ice Cream)      Origin: India	Lamb Burgers with Mint and Pine Nuts      Origin: Cyprus	Leftovers Butter Turkey      Origin: Britain
Kuku Paka (Chicken-coconut Curry)      Origin: East Africa	Lamb Chops with Pine-nut Lemon Crust      Origin: Fusion	Leftovers Stir-fry with Green Papaya      Origin: American
Kuku wa Nazi (Chicken with Coconut Milk)      Origin: Kenya	Lamb Curry with Winter Vegetables and Spinach      Origin: Fusion	Leftovers Turkey Curry      Origin: America
Kukulhu Kurandi Riha (Maldives Chicken Gizzard Curry)      Origin: Maldives	Lamb Flaps      Origin: Papua New Guinea
Kukulhu Riha (Maldives Chicken Curry)      Origin: Maldives	Lamb Rogan Josh      Origin: India

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