What is condensed milk?
Condensed milk is milk with about 60% of its water evaporated off and sugar added — around 45% of the finished product. The result is thick, white and very sweet, and the sugar is what preserves it: that is why a sealed can lasts for years without refrigeration. It was invented in the nineteenth century for exactly that, to move milk without cold, and it ended up as the base of half of Latin American baking.
Condensed and evaporated are not the same can
This is the most expensive mix-up on the shelf, because the cans look alike and sit together. Condensed has sugar: thick, white and very sweet. Evaporated is the same milk with the water removed but no sugar: it pours like liquid, the colour of ordinary milk, and it is for savoury cooking or for loosening sauces.
If a dessert calls for condensed and you use evaporated, it will not set and it will not be sweet. The other way round, a savoury dish made with condensed is inedible.
A quick test with the can: if the contents fall in a thick strand when you tip it, it is condensed. If it pours like milk, it is evaporated.
And it is not dulce de leche (yet)
Condensed milk is the starting point for dulce de leche, not the finished product. White and pourable, it is condensed milk; only after two or three hours of cooking, when the sugar and the proteins brown, does it become dulce de leche.
That is the best-known home shortcut: boil the sealed can, always covered with water, and open it only when it is completely cold.
Which one to buy
Check that the can says sweetened condensed milk: evaporated usually sits right beside it and the packaging is almost identical. In the UK the two are often on the same shelf under near-identical labels.
To boil it into dulce de leche it has to be in a can, not a pouch or a squeeze bottle: soft packaging will not take the heat.
The recipes
Frequently asked questions
- Can I swap condensed milk for evaporated?
Not in a dessert. Evaporated has neither the sugar nor the body of condensed, so the mixture will not set and will not be sweet. They are different products.
- Why does a sealed can not need refrigeration?
Because of the sugar: at that concentration it stops bacteria from developing. Once opened it does go in the refrigerator, and it keeps for a few days.
- Can condensed milk be made at home?
Yes, by reducing milk with sugar over a very low heat until it loses more than half its volume. It takes time and needs frequent stirring so it does not catch.
Updated on 2026-08-08