Source: Perfect Scoop: Ice Creams, Sorbets, Granitas, and Sweet Accompaniments
By David Lebovitz
1 cup (250 ml) whole milk
3/4 cup (150 g) sugar
Pinch of salt
2 cups (500 ml) heavy cream
4 teaspoons matcha (green tea powder)
6 large egg yolks
Warm the milk, sugar, and salt in a medium saucepan. Pour the cream into a large bowl and whisk in the green tea powder. Set a mesh strainer on top.
In a separate medium bowl, whisk together the egg yolks. Slowly pour the warm mixture into the egg yolks, whisking constantly, then scrape the warmed egg yolks back into the saucepan.
Stir the mixture constantly over medium heat with a heatproof spatula, scraping the bottom as you stir, until the mixture thickens and coats the spatula.
Pour the custard through the strainer and stir it into the cream, then whisk it vigorously until the custard is frothy to dissolve the green tea powder. Stir until cool over an ice bath.
Chill the mixture thoroughly in the refrigerator, then freeze it in your ice cream maker according to the manufacturer’s instructions.
*I prefer freezing the just-frozen green ice cream until it’s hard so the flavors develop.