Alexia - I will try to be more specific. To me this whole thing is like alchemy -
a little of this and that, whatever strikes me.
Here are some guidelines:
I use 2 bottles (750 ml each) of a Stolichnaya type vodka.
6 cups of assorted berries
3-4 peaches, halved and pitted
4-6 plums, halved and pitted,
3-4 nectarines, halved and pitted
6 -12 sprigs of mint (depends on how big they are)
1/4 to 1/2 c. honey
Combine the fruits, mint, honey and vodka in a large glass jar or crock. (I have a big Mason jar). Let it stand at least 1 week. I serve it chilled, not frozen, in shot glasses without the fruit. The fruit after 1 week is probably great over ice cream etc. However, because I keep mine for so long, the fruit, while delicious, has little color left, and texture- wise tends to be mushy. (although that's never stopped the drunks from scooping it up at the end of the nite
) If you wanted to replace the honey with sugar I suppose you could do a syrup like for limoncello with a 2:1 water to sugar ratio.
Myself, I like the way the honey tastes.
As for grappa and cherries, I use a rule of thumb recipe from Lydia Bastianich ( because my own relatives are so unreliable
)
qt. sized glass jar
fill with fruit of choice (if using cherries, clip the stems, leaving 1/8" attached)
add 4 tbs. of sugar
Grappa to cover
Leave jar loosely covered in a sunny place for 1 week
After 1 week, seal it tightly and let it steep 3 months in a dark, cool place.
You can serve the cherries and grappa together in a snifter
You can also do this with dried figs and grapes...
As for the white peach liquer - OMG that would be divine! I put up my little
Babcocks from my tree with a stick of cinnamon last year - it was pretty
g*dam good!!! Bellinis or white peach martinis ...mmmmmmm
fruit and vodka 
