Actually very easy

Hazelnut spread

The beliefThat jar is assumed to be factory magic.

The truthRoasted hazelnuts, ground long enough, release their own oil and turn to cream on their own. The rest is cocoa and sugar.

25 minutes

How to make it

What you need

200 g hazelnuts
40 g cocoa powder
80 g icing sugar
A pinch of salt
Optional: 1 tablespoon neutral oil

How the engine read this list (5 lines)

200 g	Hazelnuts	hazelnut
40 g	Cocoa powder	cocoa
80 g	Icing sugar	sugar
0 g	Salt	salt
14 g	Neutral oil optional	sunflower-oil

An empty weight means that line could not be turned into grams — either the amount is open ("to taste") or the ingredient has no record here. Neither enters the sum as zero; they do not enter it at all.

Roast the hazelnuts at 150 °C for 12–15 minutes, until the skins crack and rub off easily.
Rub them in a clean cloth while hot so the skins come away. Leftover skins make the spread bitter and gritty.
Grind in a processor. First flour, then clumps, then it looks stuck — do not stop. After 8–10 minutes it releases its oil and starts to flow.
Add the cocoa, icing sugar and salt and run it two minutes more. A spoon of oil if it is too stiff.

Why it works

A hazelnut is 60% fat, but that fat is locked inside the cell walls. Grinding tears the walls and warms the mixture; once the oil is free, dry powder turns to a flowing paste in seconds. It only comes with patience, and most people give up two minutes before it happens. Roasting does a separate job: at 150 °C the Maillard reaction builds the aroma, and spread made from unroasted nuts always tastes flat.

The rough sum

320 grams going in

1657 kcal in total

100% of the mass has figures behind it. This is the sum of what GOES IN rather than of what comes out. Wherever something evaporates, drains or ferments the two differ: a kilo of milk is 150 g of cheese.

Diets it qualifies for

Gluten-free Vegan Vegetarian Lactose-free

Storage & shelf life

How long it keeps

Room temperature, airtight jar: 3 weeks
In the fridge: 2 months, but it sets hard
If you added milk powder: 10 days, fridge only

This spread is fat-based with almost no water, so bacteria cannot grow. What ends it is oxidation rather than spoilage: hazelnut oil turns rancid as it meets air. Fill the jar to the top, leave no headspace and keep it out of the light. Oil separating on top is normal — stir and carry on.

When to bin it Smell it. If the fresh nuttiness has gone and it smells sharp, like paint or old oil, it has gone rancid. Do not taste it — bin it.

History

Where it comes from

Chocolate and hazelnut began as a workaround for scarcity. When Napoleon’s continental blockade cut off cocoa imports in 1806, chocolatiers in Turin stretched what little they had with the hazelnuts growing around them; the result was called gianduja, and every hazelnut spread descends from it. The nut itself belongs to the Black Sea: roughly two thirds of world production still comes from Turkey. The main ingredient in the jar leaves from here and the jar comes back — which is part of why making it at home makes so much sense.

The knack

It hardens in the fridge because hazelnut oil sets around 15 °C. Keep it at room temperature; it lasts three weeks.
Milk powder brings it closer to the milky version, at the cost of shelf life.

Pastes and sauces

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Ten minutes of work, two days of waiting

About as long

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