The best way to take condensed milk after opening is to take it as soon as possible, because condensed milk after opening is very easy to be infected by germs, so the best way to open the condensed milk into the refrigerator ultra-low-temperature natural environment storage, can be stored for a week or two up and down the time, but to put a long time, it is best to add heat to it is better. The first thing you need to do is to make sure that you have a good understanding of what you are doing and how you are doing it.