Prepare your ice cream bowl according to the manufacturer's instructions, typically chilling for at least 24 hours.
In a medium saucepan over medium heat, combine milk, sugar, egg yolks, and vanilla extract. Stir constantly until the mixture reaches about 170°F (77°C), being careful not to boil.
If using matcha, mix it with a few tablespoons of the hot milk mixture to create a smooth paste, then stir it back into the custard.
Pour the heavy cream into a large mixing bowl and strain the custard through a fine-mesh sieve to remove any lumps.
Cover and refrigerate the mixture for at least 8 hours or overnight.
Once chilled, pour the mixture into your ice cream maker and churn according to the manufacturer's instructions until it reaches a soft-serve consistency.
Transfer to a freezer-safe container and freeze for 4 hours or overnight for a firmer texture.
Send me this recipe!
Just enter your email below and get it sent straight to your inbox!
Notes
Store in an airtight container for up to two weeks. Use parchment paper on the surface to prevent ice crystals.