Actually very easy

Caramel sauce

The beliefCaramel is treated as a matter of craft, certain to burn a second too late and ruin the kitchen.

The truthSugar and heat. The only rules are not to stir the pan and to judge it by colour.

15 minutes

How to make it

What you need

200 g caster sugar
60 ml water
120 ml cream, warmed
40 g butter
A pinch of salt
A heavy-based pan

How the engine read this list (5 lines)

200 g	Caster sugar	sugar
60 g	Water	water
120 g	Cream	cream
40 g	Butter	butter
0 g	Salt	salt

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.

Put the sugar and water in a heavy pan and bring them to the boil over a medium flame. From here on DO NOT STIR — swirl the pan instead.
Wash any sugar off the sides with a wet brush. A single crystal drying on the rim can turn the whole syrup to sand.
Wait until the colour is amber, the shade of dark honey; 180 °C if you have a thermometer. It takes six to eight minutes and the last thirty seconds go fast — do not leave the pan.
Take it off the heat and pour the warm cream in SLOWLY, whisking. It will boil violently, which is normal; cold cream makes the caramel seize into a rock.
Whisk in the butter and salt until smooth and pour it into a jar.

Why it works

Caramelisation is sucrose breaking apart around 160 °C into hundreds of new compounds. It differs from the Maillard reaction in needing no protein: the sugar transforms on its own. At 160 °C it is yellow, at 170 gold, at 180 amber, at 190 dark brown and bitter. Ten degrees separate those, and a pan can gain ten degrees in ten seconds — which is the only reason caramel counts as difficult. The rule against stirring has its own cause: a spoon carries dry sugar crystals from the side of the pan into the syrup, and one crystal starts a chain of crystallisation that turns the whole thing to sand. Adding cream drops the temperature to 100 °C and stops the caramelisation, so warming the cream first both reduces the spitting and stops the caramel seizing.

The rough sum

420 grams going in

1469 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 Vegetarian

Storage & shelf life

How long it keeps

Fridge, in a closed jar: 3 weeks
Room temperature, without cream — sugar and water only: 3 months
Freezer: 3 months
The butter-and-cream version at room temperature: 2 days — it contains dairy

The cream and butter in this make it a dairy product; however much sugar it carries, it belongs in the fridge. Setting solid in the cold is normal — stand the jar in hot water or give it fifteen seconds in a microwave and it flows again. Do not reheat it over and over: it loses a little water each time and eventually turns into a sweet.

When to bin it A soured-cream smell or mould on the surface. If it has gone grainy it has not spoiled but crystallised, and a spoon of water over a low flame melts it back.

History

Where it comes from

Heating sugar for colour and flavour was known in the Arab world and reached Europe through Andalusia; the word’s origin is disputed but most likely the Latin *cannamella*, sugar cane. Caramel became a sauce in eighteenth-century French pâtisserie, once sugar was cheap. Its oldest relative in Turkish cooking is a different branch of the same craft: the stages of boiled sugar — thread, hard ball, caramel — are still described by the same temperature steps in lokum, helva and boiled sweets.

The knack

Darker means more flavour, but the margin is narrow: fifteen seconds past amber is bitterness. If in doubt, take it off a shade early.
If it seizes, do not panic. It melts again over a low flame with stirring — it takes a few minutes but the sauce survives.
For salted caramel take the salt to half a teaspoon: it does not mute the sweetness, it brings the caramel’s bitter note forward.

Preserves and syrups