Types of nuts and what they are best for

Cookery and botany draw the line between types of nuts in different places, so one culinary label covers several unrelated plants. Almonds and cashews are seeds taken from stone fruits, while peanuts grow in pods below ground and belong to the legumes. Learn what each name covers and you will choose your next bag with more confidence.

Key takeaways:

• Texture and fat rule: they decide whether a nut holds its bite, grinds to a cream or turns bitter in a pale bake.
• Baking: walnuts and pecans keep their crunch in cakes, ground almonds and hazelnuts go into the crumb.
• Butter: cashews collapse into a smooth paste, peanuts and almonds keep more grain.
• Rancidity is oxidation: warmth, light and air drive it, so a cool, dark, tightly closed jar buys weeks.
• Every bar names its nut: chocolate, mixed snacks and spreads declare the specific tree nut, and recipes differ between products.

What types of nuts are there?

Cooks group nuts by behaviour, and that grouping cuts across the botanical one. Hazelnuts and chestnuts are true nuts, almonds, pistachios, pecans and cashews are seeds taken from fleshy stone fruits, and peanuts sit with peas and beans. Nut varieties differ far more in fat and texture than in how strongly they taste, which is why one stands in for another in a salad yet wrecks the crumb of a torte.

What matters at home is how the flesh behaves once heat, a blade or a grinder reaches it. Some nuts stay firm and tannic, others release oil almost immediately.

The shelf splits into groups that behave differently:

• True nuts: hazelnuts and chestnuts, a hard shell around a single seed, closest to the botanical definition.
• Seeds of stone fruits: almonds, cashews, pistachios and pecans, sold as nuts and treated as nuts in every recipe.
• Legumes: peanuts ripen underground, which is why UK labelling keeps them separate from tree nuts.

For cooking, a second division is more useful still: soft, sweet, oily kernels such as cashew and macadamia on one side, firm and tannic ones such as walnut on the other.

Which nuts work best in baking?

Walnuts and pecans hold their shape through a cake or a tray of brownies, while ground almonds and hazelnuts disappear into the crumb and enrich it. The difference is mechanical: a chopped kernel stays as a piece of texture, a ground one becomes part of the batter and adds fat that softens the structure and slows staling. Skins matter too, because the tannic layer on walnuts and hazelnuts turns bitter in pale, delicate bakes.

There is no single winner, since the same nut behaves differently depending on how finely you break it. Walnuts, almonds and hazelnuts all have their own entry in our nuts and seeds range, so weights are easy to compare before you decide how much to grind and how much to chop. Toasting before baking deepens flavour, though it also warms the fat, so toasted kernels are best used the same day rather than stored.

Nuts for snacking between meals

A snack kernel has to survive a bag, a pocket and a warm afternoon, so it needs an intact shell or a coating rather than an exposed, already oily surface. That is why nuts for snacking travel best whole, salted or covered in chocolate, since each of those slows the contact between fat and air. Fat content also sets the portion, because it is the figure on the pack that explains why a small handful goes a long way.

A pack of organic Brazil nuts in raw chocolate 70 g from our shelf shows how that works on a label: half the bar is Brazil nuts, half is raw chocolate with at least 70% cocoa solids, and 100 g carry 637 kcal and 56 g of fat. The same 100 g bring 10 g of fibre, which makes the bar high in fibre under GB rules. The pack also warns that it may contain other nuts, a line worth reading when you buy for someone with an allergy.

Which nuts make the best nut butter?

Cashews give the smoothest butter, because their soft tissue collapses quickly under the blades and their fat releases early. Peanuts and almonds hold their structure far longer, so the paste keeps a light grain unless you grind it well past that point. Roasting before grinding shortens the whole process, since warm kernels give up oil faster than raw ones.

Each nut gives the grinder something different:

• Cashew: mild and sweet, pourable within minutes, and the usual base for sauces that need no dairy.
• Peanut: strong roasted flavour, stiff enough to stay on toast, equally good in a satay sauce.
• Almond and hazelnut: firmer paste with visible grain, often blended with cocoa in sweet spreads.

Cashew nuts are the easiest starting point at home, and separation is normal in any butter without added emulsifiers. Ready-made cashew, peanut and almond versions live among the nut butters and spreads, next to pastes ground from seeds.

Nuts in chocolate and sweet snacks

Cocoa butter carries roasted aromas that a bare kernel keeps quiet, which is why nuts in chocolate taste rounder than the same kernels eaten alone. Whole almonds and hazelnuts stay crunchy inside a bar, while chopped pistachios spread colour and salt across the surface. Bars with nuts and darker cocoa, such as dark chocolate with pecans or milk chocolate with hazelnuts, sit in the healthy chocolate range, alongside sweets made without added sugar.

The panel on the back carries the share of nuts, the cocoa content and the allergen line, and each of those three changes from one bar to the next. A bar based on one nut can still warn about others, because the same lines and mixing bowls handle several kinds. If the wording on a pack leaves you unsure, you can ask us in English or in Polish.

How to store nuts so they do not go rancid

Rancidity is the fat oxidising, and the pace depends on the species, on how the kernels were processed and packed, and on how much warmth, light and air they meet afterwards. Shelled kernels age faster than nuts still in their shells, because nothing shields the exposed surface. A damaged or half-open pack is the single biggest accelerator in an ordinary kitchen.

Storage comes down to a handful of habits:

• Cool, dark and airtight: a closed jar in a cupboard away from the hob beats a bag rolled shut on the worktop.
• Fridge or freezer: both suit kernels you will not finish within a few weeks, as long as the container seals properly.
• Odours travel: shelled nuts pick up moisture and smells from whatever sits beside them, so keep them away from spices and cheese.
• Buy the size you use: a small pack finished quickly stays fresher than a large one opened and reopened for months.

Oxidation announces itself in the nose and on the tongue: sharp, bitter, faintly paint-like or simply stale. Smell alone does not rule out mould or the toxins that come with it, so anything mouldy, damp or strongly off goes in the bin rather than into a recipe.

Choosing nuts: what to remember

Start from the job the nut has to do: a cake, a sauce and a pocket are three different requirements, and fat content and firmness answer all three. The types of nuts you keep at home should reflect what you actually cook, since a small stock used quickly beats one stored for a year. Before you build a short shelf you will finish while it is still fresh, compare the composition, the weights and the allergen lines across our nuts and spreads!

Frequently asked questions about types of nuts

Which nuts are best for baking?

Almonds, hazelnuts, walnuts and pecans all bake well, so at the shelf the useful question is whether the pack says whole, chopped or ground, because that decides what you can use without any extra work at home.

Are peanuts nuts?

In cooking they are treated as nuts, but botanically they are legumes that ripen in a pod underground. UK allergen law follows the botany and declares peanuts separately from tree nuts such as almonds, hazelnuts, walnuts, Brazil nuts, cashews, pecans, pistachios and macadamias.

How should nuts be stored?

Move them out of the opened pack into a container that seals, and close it again after every handful, because the air let in at each opening sets the pace of ageing.

How do you know a nut has gone rancid?

Taste one before you use a whole bag, because oxidation usually reaches the flavour before the smell becomes obvious. A single rancid kernel carries its bitterness through an entire cake, and any nut with mould, damp or a strong off odour goes straight in the bin.

Which nuts work in savoury dishes?

Cashews thicken sauces and curries, pine nuts belong in pesto and warm salads, and walnuts pair with blue cheese and roasted vegetables. Toast them briefly in a dry pan first, since heat brings out the aroma that raw kernels hold back.