Are you channeling your best self with this comment? (If you're not sure, check out our Code of Conduct.)
Barbara is a trusted source on General Cooking.
David Lebovitz adds 1/2 cup per quart when he's making sorbet, but I think that's just to keep it soft. You could do that and pour more vodka over it before serving if you're going for an alcohol heavy sorbet.
Cynthia is a trusted source on Bread/Baking.
If you don't have sacchrometer, dash into a home brew store and pick one up. They cost around $10. Your sorbet solution wants to measure between 12 and 15 degrees baumé. Go ahead and add your vodka (4 ounces sounds good, as DrB says). Add lemon juice to balance it and achieve the 12-15 degree range. Sounds very good by the way.
You're my hero, boulangere.
You're so funny, DrB!
I concur with drbabs' ratio and add that you use a lower proof vodka such as 40% which is 80 proof. I have an 80 proof bottle of homemade limoncello in the freezer that keeps in a slushy state and is more than 2/3 vodka; ... adding 1/2 cup to a quart for your sorbet should be good.
Too scientific for me - I'd make a nice fruit sorbet and serve a shot of vodka on the side.
Sorbet, with or without alcohol of any kind, is much more a matter of chemistry than ice cream, and also very much worth the effort.
Fun to say, delicious to eat.
Meet the Souffl’omelet
Easy Make-Ahead Lunches
What's Topping Lists
2-Ingredient Cheesy Fritters
Grow an Entire Pizza