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 3652 recipes in total:

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Pwdin Reis Mam (Mum's Rice Pudding)      Origin: Welsh	Rasam      Origin: Southern India	Rice Flummery      Origin: Britain
Pwdin Rhiwbob ac Afal Siocled      Origin: Welsh	Rasmalai      Origin: India	Rice Krispies Easter Eggs      Origin: American
Pynnonade (A Dish of Pine Nuts)      Origin: England	Raspberry and White Chocolate Tray Bake      Origin: British	Rice Paper Wrappers      Origin: Vietnam
Qabooli Rice      Origin: Oman	Raspberry Jam Shortbreads      Origin: Britain	Rice Pudding Muffins (Rice Pudding Muffins)      Origin: Britain
Qatar Baharat Spice Blend      Origin: Qatar	Ratafia Biscuits      Origin: Scotland	Rice Pudding Pasty      Origin: England
Qatari Sago Pudding      Origin: Qatar	Raw Seaweed Salad      Origin: Fusion	Rice Pudding with Meadowsweet and Compote of Wild Cherries      Origin: Britain
Quaking Pudding      Origin: Britain	Red Chicken Mole      Origin: Mexico	Rice Sticks with Beef in Black Bean Sauce      Origin: China
Quamar-el-Deen Dessert (Dried Apricot Leather Dessert)      Origin: Bahrain	Red Clover and Almond Biscuits      Origin: Britain	Rich and Dark Christmas Cake      Origin: British
Quarktorte mit Agar-agar (No-bake Quark Cheesecake with Agar-agar)      Origin: Switzerland	Red Curry Cambogee with Meat      Origin: Cambodia	Rich Chocolate Cake      Origin: British
Quatre Epices      Origin: France	Red Curry Dipping Sauce      Origin: Thailand	Rich Fruit Cake      Origin: British
Qubbajt (Maltese Nougat)      Origin: Malta	Red Curry Risotto with Prawns      Origin: Fusion	Rich Manx Bunloaf      Origin: Manx
Queen of Oude Sauce      Origin: British	Red snapper with Coconut Curry Sauce      Origin: Kiribati	Ris à l'Amande (Danish Almond Rice Pudding)      Origin: Denmark
Queijadinhas Crioulas (Creole Cheesecakes)      Origin: Cape Verde	Red-red with Spiced Plantains      Origin: Ghana	Risgrynsgröt (Swedish Rice Pudding)      Origin: Sweden
Queki Biscuits      Origin: Panama	Redcurrant Cobbler      Origin: America	Risotto alla Arancia (Risotto with Orange)      Origin: Italy
Quemadmodum Sinapis Facias (How to Make Mustard)      Origin: Roman	Redcurrant Muffins      Origin: Britain	Riz au Lait de Coco de Comores (Comorian Rice with Coconut Milk)      Origin: Comoros
Queque de Zanahoria (Chilean Carrot Cake)      Origin: Chile	Reform Cake with Almonds      Origin: Serbia	Riz au lait et caramel beurre salé (Rice pudding and salted butter caramel)      Origin: Senegal
Quiche au thon et légumes (Tuna and Vegetable Quiche)      Origin: Saint Pierre	Rendang Curry Paste      Origin: Fusion	Roast Chestnuts      Origin: Britain
Quiche Dent-de-Lion (Swiss Dandelion Quiche)      Origin: Switzerland	Rendang Daging (Malaysian Beef Rendang)      Origin: Malaysia	Roast Lamb with Pesto Stuffing      Origin: Britain
Quick-as-a-Bunny Easter Egg Nests      Origin: American	Rendang Fish Curry      Origin: Fusion	Roast Pheasant with Cobnut Butter      Origin: Britain
Quince and Chestnut Crumble Cake      Origin: Britain	Resalsike (Royal Fruit Stew)      Origin: England	Roast Potato Gnocchi      Origin: British
Quizaca (Cassava Leaf Stew)      Origin: Angola	Resmolle      Origin: England	Roast Quince Fool with Madeira      Origin: South Africa
Qumbe (Coconut Squares)      Origin: Somalia	Restaurant-style Butter Chicken      Origin: India	Roasted breadfruit and smoked herring      Origin: Saint Lucia
Rüeblitorte (Swiss Carrot Cake)      Origin: Switzerland	Restaurant-style Monkfish Curry      Origin: Britain	Roasted fish with Eluit el Tuu      Origin: Palau
Rad Na Moo (Pork with Noodles in Gravy)      Origin: Thailand	Rhiwbob wedi Piclo (Pickled Rhubarb)      Origin: Welsh	Roasted Hazelnuts      Origin: Britain
Ragi Rava Ladoo      Origin: India	Rhubarb and Apple Crumble with Toasted Nuts      Origin: Britain	Robinson      Origin: Martinique
Ragoût aux épinards (Spinach Stew)      Origin: Central African Republic	Rhubarb and Elderflower Cake      Origin: Britain	Rochers Congolaise (Congolese Rock Cakes)      Origin: Congo
Ragoût de Chévre au Riz (Goat Stew with Rice)      Origin: DR-Congo	Rhubarb and Ginger Crumble      Origin: Italy	Rocoto Rellenos (Stuffed Rocoto Chillies)      Origin: Peru
Ragu alla Bolognese (Traditional Bolognese Sauce)      Origin: Italy	Rhubarb and Walnut Muffins      Origin: American	Rogan Josh Masala      Origin: Britain
Raj Beef Curry      Origin: Anglo-Indian	Rhubarb Crumble      Origin: Britain	Roman Gnocchi      Origin: British
Rangeenak (Persian Date Dessert)      Origin: Iran	Ribnoye Kharcho (Salmon and Walnut Soup)      Origin: Georgia	Roof Tile Crackers      Origin: British
Rapa Nui Dumplings      Origin: Easter Island	Ricciarelli (Sienese Christmas Biscuits)      Origin: Italy	Rose and Pistachio Tres Leches      Origin: Fusion
Ras el hanout      Origin: North Africa	Rice and Peas      Origin: Jamaica	Rose Petal Drop Scones      Origin: Britain
Ras Malai      Origin: India	Rice and Peas      Origin: Saint Kitts
Rasabali      Origin: India	Rice Cakes      Origin: Federated States Micronesia

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