Blood Plum Sherbet

Name: Blood Plum Sherbet
Ingredients: 2 cups Plum puree from 6-8 (or as many as it takes to yield 2 cups puree once its strained) very ripe preferably organic blood plums washed well, pits removed and chopped into quarters skin and all. Chop the plums into a bowl so you retain all the juices; 3/4 cup Super fine sugar,if you don't have superfine its ok use regular sugar (Add more if needed depending on how sweet you like it).; 1 cup Cold Whole milk; Pinch of lime zest (one swipe on the microplane) to brighten Optional; 2 Blood plums peeled and sliced; 1 teaspoon Sugar