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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Pork and Wild Food Curry      Origin: Britain	Poulet de Guinée (Guinean Chicken)      Origin: Guinea	Pumpkin Cheesecake      Origin: Britain
Pork Sparerib Soup      Origin: Fusion	Poulet Nyembwe      Origin: Gabon	Pumpkin Chelsea Buns      Origin: British
Port of Spain Crabs and Dumplings      Origin: Trinidad	Poulet Yassa (Chicken Yassa)      Origin: Gambia	Pumpkin Croquettes      Origin: Fusion
Potage Congolaise (Congolese Soup)      Origin: Congo	Poulet Yassa Malienne (Malian Chicken Yassa)      Origin: Mali	Pumpkin Fudge      Origin: American
Potage Fene Boiles (A Broad Bean Pudding)      Origin: England	Poullaille farcie (Stuffed Poultry)      Origin: France	Pumpkin Hummus      Origin: American
Potage of Rice      Origin: England	Pourcelet farci (Stuffed Suckling Pig)      Origin: France	Pumpkin Pie Blintzes      Origin: American
Potato and Broccoli Gratin with Goat's Cheese      Origin: Ireland	Prawn Balti      Origin: Britain	Pumpkin Pie Spice      Origin: American
Potato and Onion Flan      Origin: Ireland	Prawn Biryani      Origin: India	Pumpkin Spice Cookies      Origin: American
Potato Cakes with Mango Sauce      Origin: Ireland	Prawn Caldine      Origin: India	Pumpkin with Nilgiri Sauce      Origin: India
Potato Candy      Origin: Britain	Prawn Pasanda      Origin: Britain	Pumpkin, Goat's Cheese and Kale Tart with Three-cornered Leeks (Pumpkin, Goat's Cheese and Kale Tart with Three-cornered Leeks)      Origin: Britain
Potato Cream Cake      Origin: Britain	Prawn Powder      Origin: Anglo-Indian	Pumpkin, Goat's Cheese and Kale Tart      Origin: British
Potato Sweets      Origin: Ireland	Prawn, Mangetout and Cashew Nut Stir-fry      Origin: Australia	Punch Coco (Coconut Punch)      Origin: Comoros
Potato Vegetable Kugel      Origin: Jewish	Pressure Cooker Chicken Korma      Origin: Fusion	Pur Fayte Ypocras (To Make Hippocras)      Origin: England
Potato Wedges with Curry Sauce      Origin: Britain	Pressure Cooker Chocolate Peanut Cheesecake      Origin: American	Purée d'Aubergines (Aubergine Purée)      Origin: Rwanda
Potatoes with Almonds and Cream      Origin: British	Pressure Cooker Coconut Lamb Curry      Origin: Britain	Purée d'Oseille (Hibiscus Leaf Purée)      Origin: Chad
Potatoes with Mushrooms      Origin: Ireland	Pressure Cooker Curried Beef Stew      Origin: South Africa	Puri (Indian Balloon Bread)      Origin: India
Potatoes with Pine Nuts      Origin: Ireland	Pressure Cooker Curried Squash      Origin: Fusion	Pwdin Bara (Bread Pudding)      Origin: Welsh
Potes Llysiau â Dwmplinau (Vegetable Stew with Dumplings)      Origin: Welsh	Pressure Cooker Massaman Beef Curry      Origin: Britain	Pwdin Bara Marmalêd (Marmalade Bread and Butter Pudding)      Origin: Welsh
Potted Morecambe Bay Shrimps      Origin: England	Pressure Cooker Pumpkin Cheesecake      Origin: American	Pwdin Bara Menyn (Bread and Butter Pudding)      Origin: Welsh
Potted Woodlice      Origin: Britain	Pressure Cooker Thai Red Curry      Origin: Britain	Pwdin Berw Bara Lawr (Laverbread Suet Pudding)      Origin: Welsh
Poulet à L'Indienne (Comoran Chicken Curry)      Origin: Comoros	Pressure Cooker Vegetable and Coconut Curry      Origin: Fusion	Pwdin Bricyll Siocled (Chocolate Apricot Pudding)      Origin: Welsh
Poulet à la N'Gatietro (Chicken in the Manner of N'Gatietro)      Origin: Cote dIvoire	Prik Gaeng Panang (Panang Red Curry Paste)      Origin: Thailand	Pwdin Bricyll Siocled (Chocolate Rhubarb Pudding)      Origin: Welsh
Poulet à la Noix de Coco et aux Arachides (Chicken with Coconut and Peanuts)      Origin: Gabon	Pudina Chutney (Indian Mint Chutney)      Origin: India	Pwdin Briwfwyd (Mincemeat Pudding)      Origin: Welsh
Poulet au Beurre de Cacahuète (Chicken with Peanut Butter)      Origin: Senegal	Pudina Chutney (Mint Chutney)      Origin: India	Pwdin Eirin Mair Siocled (Chocolate Gooseberry Pudding)      Origin: Welsh
Poulet au Coco (Chicken with Coconut)      Origin: Comoros	Pudina tal-Hobz (Maltese Bread Pudding)      Origin: Malta	Pwdin Eirin Melyn Siocled (Chocolate Greengage Pudding)      Origin: Welsh
Poulet au Coco Antillaise (Martinican coconut chicken)      Origin: Martinique	Puerto Rican Tembleque (Quaking Coconut Pudding)      Origin: Puerto Rico	Pwdin Ffrwythau'r Berllan (Orchard Fruit Pudding)      Origin: Welsh
Poulet au Curry Réunionaise (Reunion Chicken Curry)      Origin: Reunion	Pulë me Arra (Chicken with Walnuts)      Origin: Albania	Pwdin Reis Mam (Mum's Rice Pudding)      Origin: Welsh
Poulet aux Arachides à la Togolaise (Chicken with Peanuts, Togo Fashion)      Origin: Togo	Puli Pithe      Origin: India	Pwdin Rhiwbob ac Afal Siocled      Origin: Welsh
Poulet aux Arachides de Niger (Chicken with Peanuts, Niger Style)      Origin: Niger	Pullum Numidicum (Numidian Guinea Fowl)      Origin: Roman	Pynnonade (A Dish of Pine Nuts)      Origin: England
Poulet aux Bananes Plantains (Chicken with Plantains)      Origin: Cameroon	Pullus Vardanus (Chicken à la Varus)      Origin: Roman	Quaking Pudding      Origin: Britain
Poulet aux Bananes Plantains (Chicken with Plantains)      Origin: Madagascar	Pumpes (Pork Meatballs)      Origin: England	Quamar-el-Deen Dessert (Dried Apricot Leather Dessert)      Origin: Bahrain
Poulet Colombo      Origin: French Guiana	Pumpkin Bread      Origin: American	Quarktorte mit Agar-agar (No-bake Quark Cheesecake with Agar-agar)      Origin: Switzerland
Poulet Créole (Creole Chicken)      Origin: Mauritius	Pumpkin Brownies      Origin: Britain
Poulet de Comores (Comorian Chicken)      Origin: Comoros	Pumpkin Cake      Origin: Liberia

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