It's an American recipe so it uses cups
Ingredients
2/3 cup water
good quality green teabag or loose green tea leaves (I use Clearspring organic sencha)
1/2 cup sugar (I usually use fructose)
3 ripe mangoes
3 tablespoons fresh lime juice
Instructions
Boil kettle and make green tea, allow to steep for 5 mins or so. Pour tea into saucepan, add sugar and bring to a boil. Boil until sugar dissolves, about 1 minute. Remove from heat and cool about 30 minutes.
Peel mangoes and cut fruit from pit. (I cut the flesh off either side of the stone without peeling. Then score a grid in each cut piece almost through to the skin, then push it inside out and remove the cubes.) In a food processor or blender, puree mangoes with lime juice. Add tea and blend until smooth. Pour into a glass 9-inch baking dish and freeze about 3 hours.
Transfer mango mixture to a food processor. Pulse until smooth, 30 to 40 seconds. Serve at once or store in the freezer for up to 2 months. Soften 10 minutes before serving.
All the quantities are approximate, it won't matter much if you use more or less of anything so adjust it to your taste.