Step 1: Process the Pistachios Add the raw, unsalted pistachios to a food processor. Pulse until they break down into small pieces, then continue processing for 3-4 minutes, scraping down the sides as needed, until the pistachios release their oils and form a smooth, creamy paste. This might seem like it’s taking forever (it won’t turn into a smooth paste instantly), but keep going. The natural oils will eventually release, creating that beautiful pistachio butter. This step is crucial—don’t skip it. Set the pistachio paste aside.

Step 2: Create the Custard Base Pour the heavy cream and whole milk into a medium saucepan. Heat over medium heat, stirring occasionally, until the mixture is steaming hot and tiny bubbles form around the edges (about 5-7 minutes). Don’t boil it; you just want it hot enough to cook the egg yolks gently. Remove from heat.

Step 3: Temper the Egg Yolks While the cream heats, whisk the egg yolks with the sugar in a separate bowl until the mixture is pale yellow and slightly thickened (about 2-3 minutes of whisking). This whisking is important because it helps prevent the eggs from scrambling when you add the hot cream.

Slowly pour about ¼ of the hot cream mixture into the egg yolk mixture, whisking constantly. This gradually raises the temperature of the eggs. Once combined, slowly pour the egg mixture back into the remaining cream, whisking constantly. This process, called tempering, ensures smooth custard without any scrambled egg bits.

Step 4: Cook the Custard Return the saucepan to medium-low heat. Cook, stirring constantly with a wooden spoon or whisk, for 5-8 minutes until the mixture reaches 160°F (or until it coats the back of a spoon and doesn’t drip off when you run your finger across it). Be patient and don’t rush this step—you want to create a proper custard without scrambling the eggs.

Step 5: Infuse with Pistachio Remove from heat and immediately stir in the pistachio paste, salt, and vanilla extract. Stir thoroughly for 2-3 minutes to fully incorporate the pistachio flavor throughout the custard base. The mixture might seem thick, but this is normal.

Step 6: Cool the Base Pour the pistachio custard into a clean bowl. Let it cool to room temperature (about 30 minutes), stirring occasionally. Once cooled, cover and refrigerate for at least 4 hours, or preferably overnight. Chilling the base is essential for the best texture—don’t skip this step.

Step 7: Churn the Gelato If using an ice cream maker: Churn the chilled base according to your machine’s instructions (usually 20-30 minutes) until it reaches a soft-serve consistency. Transfer to a freezer-safe container and freeze for at least 4 hours until firm.

If no ice cream maker: Pour the chilled base into a shallow baking dish. Freeze for 30 minutes, then remove and stir vigorously with a fork, scraping the ice crystals from the sides toward the center. Repeat this process every 30 minutes for 3-4 hours until the gelato reaches a creamy, scoopable consistency.

Step 8: Serve and Enjoy Scoop into chilled bowls and serve immediately. Pistachio gelato is best enjoyed within 2-3 weeks, though it’s rarely around that long in most households!