Stracciatella Gelato is kind of like American chocolate chip ice cream, except completely different. Instead of the chips and sometimes chunks you find in American product, Stracciattella has fine bits of chocolate throughout, which results in a smooth texture with just the slightest crunch in every bite. This is achieved by drizzling in a thin stream of melted chocolate during the final stages of churning, which hardens on contact and gets broken up as it churns. My two previous gelato recipes, chocolate  and pistachio , were Sicilian style gelato, which has no egg or cream and is thickened with a crema rinforzata made from milk, sugar and cornstarch. Here, for a little variety, I went with a Northern Italian style vanilla gelato, made with an egg based custard.