Condensed Milk – Can Evaporated Milk Be Converted to Sweetened Condensed Milk?

No.

Sweetened condensed milk has a 40% sugar content. It is very sweet, suitable for desserts and such. It is entirely too sweet to substituted into a curry.

The consistency is drastically different. Evaporated milk is about the same consistency as heavy cream. Sweetened condensed milk, because of its high sugar content, is more the consistency of a warm caramel.

Also, they are different colors, evaporated milk is white, sweetened condensed is light brown.

Yes, you could certainly reconstitute evaporated milk by adding water.

The outcome would give you similar but not identical results as fresh milk, due to the change in flavor the milk underwent while being cooked down to the evaporated state: it will retain the slightly cooked, caramelized flavor. This may or many not have a significant effect on a given recipe.

Milk also freezes, and still is suitable for most cooking purposes, should you choose to do so.

Finally, if you use milk very rarely, unless you are making a dairy dominated recipe like custard or cream soup, you may not have to use milk at all. Water or another liquid might perform similarly or well enough—it depends on the specific application.