Is condensed milk the same as sweetened condensed milk?
Just to add to Marti's answer: If the recipe was written in the US within the past 30-40 (maybe more) years, "condensed" almost certainly means sweetened condensed. Sweetened is just assumed if the milk is described as "condensed". At least in the US, unsweetened condensed milk is never called "condensed", it is called "evaporated".

To boost my confidence in this answer before I posted it, I searched Amazon for "Condensed Milk". In 22 pages of results, I was not able to find a SINGLE product described as "condensed milk" that was unsweetened. I did however find several that used "condensed milk" without the word sweetened in the name of the product page, but without fail, these ALL turned out to be sweetened. 










If the recipe is old or if its origins are outside of the US, I can't be absolutely positive what the author intended, but I have never seen "unsweetened condensed milk".