- Heat coconut milk over medium heat in a saucepan until hot but not boiling, about 5 minutes.
- Remove from heat and whisk in matcha powder, ⅓ cup of sugar, vanilla and sea salt until thoroughly combined. Taste and add additional sugar if desired. Transfer to a medium mixing bowl and chill mixture in refrigerator for 30 minutes. This will help mixture freeze evenly.
- Stir mixture once more and pour into a loaf pan, then cover with plastic wrap. Freeze for 2 hours.
- Stir, scraping sides with a spoon for even freezing and freeze an additional 2 hours for soft serve style or add an additional 4 hours for firmer ice cream.
- Scoop ice cream into bowls and serve drizzled with sesame oil.