In a heatproof bowl, melt the white chocolate and coconut oil together in short bursts in the microwave (or over a double boiler).
Stir in the vanilla and sifted matcha until smooth and glossy.
Let cool for 1–2 minutes (so it’s not piping hot).
Pour over your favorite ice cream (my vote: vanilla, strawberry, or more matcha), then finish with flaky sea salt.
Crack and enjoy!