Soaking fruits and things in alcohol
You made something what in Poland we call tincture Nalewka . But we usually use 160 proof spirit. 
Fresh fruits in alcohol will infuse it with it's taste and sweetness. Very good with clean alcohol. Not so great with one that already have some aroma in it. May produce strange things as whiskey wood may not go well with some fruit freshness (for me anyway). 

But the first things may be a red flag. First, what was the pickle made of? Vinegar, sugar, herbs, salt? If yes you may get something close to Smokey Martini. 

Or did your pickles are type of polish ones? Not pickled but, you know, fermented, more salty, acidic ones? 

The best way to check on how the infusion is going is to check bottom of jars, there should be some "dust/mud" at the bottom, this show that the alcohol is filtrating through the fruits. that bottom dust should not be drank. Also the nalewka should be more dense and sticky at it will absorb sugar. 

You can open them and check the taste (I usually us syringe as not to stir the slime). And I would do that on the pickled ones.