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1
Once you've shelled your pistachios (a painstaking task, so make sure the people enjoying the results of your labor know just how much labor was involved), add 1 cup to a food processor fitted with an S-blade. Reserve the other 1/2 cup for later. Pulse the pistachios until they've gotten as fine as possible, about 20 pulses should make this happen.
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2
From here, you can either add a 1/2-1 cup of your coconut milk directly to the food processor and blend together with the pistachios until creamy. But for the absolute smoothest results possible, transfer the pistachio crumbs and 1/2-1 cup of coconut milk to a high power blender. Blend until you've achieved a thick-but-smooth texture (think peanut butter, but with pistachios).
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3
In a medium stockpot, add your coconut milk, honey, pistachio paste and vanilla. Bring this mixture to a light simmer over medium heat, whisking vigorously to combine.
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4
Separate a few tablespoons (two to three) of your warm base into a small bowl. Add your arrowroot and whisk together until completely smooth.
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5
Add the arrowroot mixture back to your base. Whisk everything together for about one minute and then remove from the heat.
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6
If you're using the matcha (which is mostly only meant to give your ice cream a more traditional green-ish hue), whisk in now until fully incorporated.
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7
Transfer your ice cream base to a large bowl and refrigerate for about 3-4 hours or up to overnight.
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8
Once completely chilled, add to your ice cream maker of choice to churn. (If you're using the KitchenAid Ice Cream Maker attachment, this will take about 15-20 minutes on medium speed.)
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9
Transfer again (lots of transferring in the ice cream making process, no?) to a freezer safe container, layering your remaining 1/2 cup of pistachios (which you can chop or leave whole) as you go. Put the container in the very back of your freezer for 4-6 hours or until completely hardened.
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10
Serve with a few remaining chopped pistachios (if you haven't gobbled them up while anxiously waiting) and a drizzle of honey: enjoy!
