I found about a dozen bottles of my father's home made wine. My father passed away some time ago and I would like to restore the wine as a keepsake since I am not a wine drinker. Originally it was made from zinfandel grapes in oak brandy barrels. It has been stored in a dark, cool basement but the bottles were righ side up when I found them.
There is a lot of sediment at the bottom of the bottles but I opened one and the aroma was very nice, at least to me it seemed to be. Unfortunately I do not know the age. Some of the bottles may be over 30 years. It is a mix of years. I hate to throw it out but there is concern from a food safety perspective. Can any process be used to "restore" the wine such as filtration so I can keep it. I suspect not but it does not hurt to ask an expert. I don't like the idea of having something he made just sit in a bad way.