? on cuts or blending, maybe both?

[sadie33]

I have a ? but don't know how to ask it so I hope you can figure out what I'm asking.
I did a spirit run on 5 gal of HBB (4 gal low wines and 1 gal of whiskey feints)

When I do my cuts I have a gallon "keeps" jar. I have a gallon feints jar. If I ? a jar I put it off to the side for later. I have read, and others have suggested, making little samples to see if I like it with a certain jar added.

So here's where I get lost or ? the process. Say I have 8 jars added to my keeps jug and I want to know if I should add jar #10, we'll say. I take out a bit of my keeps jar and add a bit of jar #10 and make a sample. How do I do the ratio? The ratio in my sample has to be the same in my jug and I don't know how to do that...I hope y'all understand what I'm asking.