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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Steamed Rich Plum Cake      Origin: Britain	Sweet Chestnut Flour, Hazelnut and Chocolate Cake      Origin: Italy	Tarten Gwreiddlysiau wedi’i Charameleiddio (Caramelised Root Vegetable Tart)      Origin: Welsh
Steamed Sole with Black Bean Sauce      Origin: China	Sweet Potato Casserole      Origin: Bermuda	Tarten Llus (Bilberry Tart)      Origin: Welsh
Stewed Beef in Coconut Milk with Dumplings      Origin: Trinidad	Sweet Potato Ice Cream      Origin: American	Tarten Rhiwbob a Mafon (Rhubarb and Raspberry Tart)      Origin: Welsh
Stewed Chayote with Tomato and Epazote      Origin: Mexico	Sweet Potato Pudding      Origin: Saint Kitts	Tartlettes/Tartletes (Tartlets)      Origin: England
Stewed saltfish with spicy plantains and coconut dumplings      Origin: Saint Kitts	Sweet Sattu      Origin: India	Tartys Choklet (Chocolate Tarts)      Origin: England
Sticky Ginger Pudding      Origin: Britain	Swffle Bara Lawr (Laverbread Soufflé)      Origin: Welsh	Tausug Beef Kulma      Origin: Philippines
Sticky-spiced Duck Legs with Plums      Origin: Fusion	Swiss-style Muesli      Origin: Switzerland	Teisen Borc (Welsh Pork Cake)      Origin: Welsh
Stilton and Port Pâté      Origin: Britain	Syrip for a Capon or Faysant (Sauce for Capon or Pheasant)      Origin: England	Teisen Ceulfwyd Bro Gŵyr (Gower Peninsula Dowset)      Origin: Welsh
Stinging Nettle and Wild Garlic Pesto      Origin: Britain	Szechuan Fried Aubergine      Origin: China	Teisen Cnau a Ffrwythau (Fruit and Nut Cake)      Origin: Welsh
Stinging Nettle Chips      Origin: Britain	Szechuan-style Pork and Pepper      Origin: China	Teisen Ddu (Black Cake)      Origin: Welsh
Stockfish Stew      Origin: Nigeria	Tafell Fricyll a Cheirch (Apricot and Oat Slice)      Origin: Welsh	Teisen Ddu Nadolig (Black Christmas Cake)      Origin: Welsh
Stovies      Origin: Scotland	Tagine of Lamb with Pumpkin      Origin: North Africa	Teisen Fferm (Farmhouse Cake)      Origin: Welsh
Strawberry Ambrosia Muffins (Strawberry Ambrosia Muffins)      Origin: American	Tajine de chameau aux abricots secs (Camel tagine with dried apricots)      Origin: Mali	Teisen Frau Gellyg Ffres a Mascarpone (Fresh Pear and Mascarpone Shortcake)      Origin: Welsh
Strawberry and Daisy Sponge Cake      Origin: Britain	Tam Som (Lao Green Papaya Salad)      Origin: Laos	Teisen Frau Noswaith Lawen (Pan-fried Parsnips and Mushrooms with a Garlic and Parsley Crust)      Origin: Welsh
Strawberry and Macadamia Blondies      Origin: British	Tamil Nadu Meat Curry Powder      Origin: India	Teisen Gaws Pice ar y Maen Pob (Baked Welshcake Cheesecake)      Origin: Welsh
Strawberry Blancmange      Origin: British	Tamina (Semolina Dessert)      Origin: Niger	Teisen Lap: Ail Ffordd (Teisen Lap: Method 2)      Origin: Welsh
Strawberry Knotweed Pie      Origin: Britain	Tandoori Chicken      Origin: India	Teisen Lap: Ffordd Gyntaf (Teisen Lap: Method 1)      Origin: Welsh
Strawberry Phirni      Origin: India	Tandoori Masala      Origin: India	Teisen Nadolig Wen (White Christmas Cake)      Origin: Welsh
Street Food Pad Thai      Origin: Thailand	Tankora Powder      Origin: Ghana	Teisen Reis (Boiled Rice Cake)      Origin: Welsh
Stuffed Hake with Mushroom Gravy      Origin: African Fusion	Tannia and Pineapple Fritters      Origin: Saint Kitts	Teisen Sbeis Eirin a Chnau (Spiced Plum and Nut Cake)      Origin: Welsh (Patagonia)
Sudanese Basbousa      Origin: Sudan-a	Tanzanian Coconut Bean Soup      Origin: Tanzania	Teisen Simnel (Simnel Cake)      Origin: Welsh
Suet Pudding      Origin: Britain	Tanzanian Pineapple Salad      Origin: Tanzania	Teisen y Cynhaeaf (Harvest Cake)      Origin: Welsh
Suet-less Mincemeat      Origin: Britain	Tanzanian Plantain Curry      Origin: Tanzania	Teisennu Briwsionu Cyffug Mêl Penfro (Pembrokeshire honey fudge crumblies)      Origin: Welsh
Sugar Cake      Origin: Saint Kitts	Tapado (Seafood Soup)      Origin: Guatemala	Tempting Trifle Cheesecake      Origin: Britain
Sugar Plums      Origin: Britain	Taro aux Fruits de Mer (Taro with Seafood)      Origin: Cote dIvoire	Terrine Hwyaden, Porc a Mafon (Duck, Pork and Raspberry Terrine)      Origin: Welsh
Sun-dried Tomato and Garlic Pesto      Origin: Italy	Tarragon and Beech Mast Vinaigrette      Origin: Britain	Terrine Verte (Wild Greens Terrine)      Origin: Switzerland
Sunday Bread      Origin: Antigua	Tart de ffruyte (A Fruit Pie)      Origin: England	Thai Chicken and Burdock Curry      Origin: Fusion
Sunflower and Peanut Halva      Origin: Russia	Tarte au Rumex Alpin (Alpine Dock Tart)      Origin: Switzerland	Thai Chicken Soup with Ginger and Lime      Origin: Thailand
Superlative Mincemeat      Origin: British	Tarte noix de Coco (Coconut Tart)      Origin: Saint-Martin	Thai Chilli Ice Cream      Origin: Fusion
Surun Cyffaith Poeth (Hot Sour Confection)      Origin: Welsh	Tarten Afal a Chaws (Apple and Cheese Tart)      Origin: Welsh	Thai Chilli Sorbet      Origin: Fusion
Suya Curry      Origin: Fusion	Tarten Bricyll a Mafon (Apricot and Raspberry Tart)      Origin: Welsh	Thai Coconut and Rainbow-Pepper Chicken Soup      Origin: Thailand
Swazi Babotie      Origin: eSwatini	Tarten Ceirios (Cherry Tart)      Origin: Welsh	Thai Green Curried Cod      Origin: Fusion
Sweet and Sour Noodles with Chicken      Origin: China	Tarten Eirin (Plum Tart)      Origin: Welsh
Sweet and Sour Vegetables on Noodle Pancakes      Origin: China	Tarten Eirin Mair (Gooseberry Tart)      Origin: Welsh

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