I would like to know if it would be safe to substitute fresh or bottled apple "cider" in place of apple juice in a safe tested jelly recipe that only mentions apple juice.  I am finding contradictory information, that the cider may increase acidity and therefore could not be considered a safe substitution.  It has been my experience that substitutes are safe, especially in jam/jelly, as long as the acidity of the ingredient remains the same, or is a higher acidity than the original.  Is this not the case?

If this is not a safe substitute, can you please expand on why?

What is this insect?? I find dead carcasses of these all over my basement. Some are three inches long. They are never upstairs and I haven’t seen them outside. This is the first live one I’ve seen. It looks to only have legs at the front, so not a millipede. Where do they come from and how do they reproduce if they just come to my basement to die???

I live six blocks north of campus.