Forgot that I have these . 30+ years ago with my grandmother, we had made 50 gallons of wine. One in particular is a red Zinfandel. They have been stored in bottles on their side. When I was looking at the dusty bottles, you can see a settling of something that looks like pigment from the reddish color. If you stand it upright, you'll see some of it fall away from the inner walls of the bottle in small sheets. The color, even though stored in total darkness at about 52-58 degrees, seem very light through the green bottles. Since grandma is gone now, what is the opinion on opening and using the wines inside. I also have a few gallons of red Zinfandel that was stored in the whiskey barrel for 9-10 years and then we bottled some just to get the barrel out of the way. This stuff smells strong like a Marsala wine . This one is about 25 yrs old. Looking for ways to determine safety, use and or longer term storage if viable.