I dunno. Its certainly possible to perfect a particular ice cream recipe if you are going to make it more than once. However, we've made SLIGHT modifications to simple vanilla ice creams or custard base recipes to include fruit juices or whole fruit puree or pulp and things get royally screwed up, its taken us several tries to get the desired effect, with the right fat density with the type of cream used, amount of sugar, eggs, etc. Whereas we can make a sorbet recipe and the first time it will come out great, they are a lot less complicated.