The cubes will melt however and make everything soggy so i d go with the dry ice.
Refrigerated salad dressing left out.
Salad dressing usually will not stay fresh for very long at room temp.
Like me you might wonder which ones really need to be refrigerated so you can free up some shelf space.
I have often wondered if salad dressing really needs to be refrigerated.
Salads can be safely left out at room temperature for about two hours or one hour if the temperature is above 90 degrees fahrenheit.
There are many salad dressings out there making it difficult to choose just one to use on your salads which can make the fridge become a bit cluttered at times.
The best way to preserve it is to keep it in a lunchbox with a tiny amount of cloth wrapped dry ice or ice cubes wrapped in cloth.
When unopened it will stay good at room temperature for a long time as indicated by.
They come with a use by or sell by date and that date is a pretty good indicator of how long the mix stays fine.
Usually a few weeks maybe up to two months.
This applies both to salads made with leafy greens like lettuce spinach and kale and to salads made with cooked foods such as potato salad pasta salad egg salad and chicken salad.