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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Easter Tansy      Origin: Britain	Farine Breakfast Porridge      Origin: Guyana	Flan (Guatemalan Caramel Custard)      Origin: Guatemala
Easter Teabread      Origin: Britain	Farine Grits      Origin: Guyana	Flan Amande et d'abricot (Almond and Apricot Flan)      Origin: France
Easter Trifle      Origin: British	Farka (Couscous Breakfast)      Origin: Tunisia	Flan Coco Antillais (French Antilles Coconut Flan)      Origin: Saint-Martin
Easy Coconut Chicken Curry      Origin: New Zealand	Fat Hen and Potato Gratin      Origin: British	Flan Coco Antillais (French Antilles Coconut Flan)      Origin: Saint Barthelemy
Easy Praline Cookies with Tonka Beans      Origin: British	Fénénésti (Blended Rice Pancakes)      Origin: Mayotte	Flan Coco Antillais (French Antilles Coconut Flan)      Origin: French Guiana
Ecclefechan Butter Tart      Origin: Scotland	Fénénésti (Blended Rice Pancakes)      Origin: Comoros	Flan Coco Antillais (French Antilles Coconut Flan)      Origin: Guadeloupe
Ecrevisses au Curry (Crayfish Curry)      Origin: Cote dIvoire	Fennel and Almond Soup      Origin: North Africa	Flan Coco Antillais (French Antilles Coconut Flan)      Origin: Martinique
Edinburgh Fog      Origin: Scotland	Fennel and Walnut Soup      Origin: British	Flan Coco Antillais (French Antilles Coconut Flan)      Origin: Sint Maarten
Egg Fu Yung      Origin: China	Fesenjoon (Persian Chicken)      Origin: Iran	Florentine Pizza      Origin: Italy
Egg Masala      Origin: India	Feuilles de Consoude Farcies (Stuffed Comfrey Leaves)      Origin: France	Fochabers Gingerbread      Origin: Scotland
Eggnog      Origin: Britain	Feuilles de Manioc Malienne (Malian Cassava Leaf Stew)      Origin: Mali	Foie au coco (Liver with Coconut)      Origin: Mayotte
Eggnog Biscuits      Origin: British	Fferins Cnau Coco (Coconut Sweets)      Origin: Welsh	Folaa Rice      Origin: Sri Lanka
Eggnog Christmas Bread      Origin: British	Ffesant Nadolig (Christmas Pheasant)      Origin: Welsh	Folon      Origin: Cameroon
Egyptian Basbousa      Origin: Egypt	Fiadone      Origin: France	Fonio and Oat Balls in Peanut Sauce      Origin: Fusion
Eirin Gwlanog wedi Piclo (Pickled Peaches)      Origin: Welsh	Fig and Almond Cheesecake      Origin: Britain	Fonio Bread      Origin: Fusion
Eirin Mair wedi Piclo (Pickled Gooseberries)      Origin: Welsh	Fig, Walnut and Orange Cake      Origin: Ireland	Fonio Cuit à la Vapeur (Steamed Fonio)      Origin: Senegal
Eirin wedi Piclo (Pickled Plums)      Origin: Welsh	Figolli (Maltese Easter Biscuits)      Origin: Malta	Fonnell      Origin: England
Elderberry and Chocolate Muffins      Origin: Britain	Fijian Chicken and Potato Curry      Origin: Fiji	For to make blank manger (To Make White Food)      Origin: England
Elizabethan Cheese-curd Tart      Origin: England	Fijian Crab Curry      Origin: Fiji	Fragrant Coconut Rice      Origin: Thailand
Elizabethan Pickled Mushrooms      Origin: Britain	Fijian Indian Tomato Chutney      Origin: Fiji	Fragrant Lamb Kofta Curry      Origin: Britain
Embractum Baianum (Baian Stew)      Origin: Roman	Fijian Palao Masala      Origin: Fiji	Francatelli's Allemande Sauce      Origin: Britain
Embractum Baianum (Baian Stew)      Origin: Roman	Fijian Suruwa (Fijian Fish Curry)      Origin: Fiji	Francatelli's Yorkshire Pudding      Origin: Britain
English Madeleines      Origin: England	Filipino Beef Rendang      Origin: Philippines	Frango com Piri-piri (Piri-piri Chicken)      Origin: Mozambique
English Madeleines      Origin: Britain	Filipino Cassava Cake      Origin: Philippines	Frango de Churrasco de Guiné (Guinea-Bissau Barbecued Chicken)      Origin: Guinea-Bissau
Ensalada de Frutas Tropicales (Tropical Fruit Salad)      Origin: Equatorial Guinea	Filipino Chicken Curry      Origin: Philippines	Frango Grelhado Piri Piri (Grilled Chicken with Chillies)      Origin: Angola
Epicurean Sauce      Origin: Britain	Filipino Chicken Curry 2      Origin: Philippines	Frango Zambeziana (Zambezi Chicken)      Origin: Mozambique
Epicurean Sauce      Origin: British	Filipino Fish Curry      Origin: Philippines	Frankfurter Kranz (Frankfurt Crown Cake)      Origin: Germany
Equatorial Guinea Peanut Sauce      Origin: Equatorial Guinea	Finsk Brød (Finnish Bread)      Origin: Denmark	French Bean and Duck Green Thai Curry      Origin: Thailand
Es Cendol (Cold Dessert)      Origin: Brunei	Firni (Ground Rice Blancmange)      Origin: India	French Coconut Fish Curry      Origin: France
Eve's Pudding      Origin: England	Fish Molee (Keralan Fish Stew)      Origin: India	Fresh Coconut Cake      Origin: Aruba
Excellent Small Cakes      Origin: Britain	Fish Padha (Sri Lankan Fish Pickle)      Origin: Sri Lanka	Fresh Pumpkin Pie      Origin: American
Fögnè Sourtinaadi (Fonio Couscous with Meatballs in Tomato Sauce)      Origin: Guinea	Fish Serre      Origin: Belize	Friands aux Amandes (Mini Almond Cakes)      Origin: France
Fanouropita (Greek Spiced Sultana Cake)      Origin: Greece	Fish Steaks with Barbecue Sauce      Origin: Anguilla
Farina Pie      Origin: Bermuda	Fisk på grönsakspytt (Ham Cakes)      Origin: Sweden

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