Cook and peel shrimp according to the instructions on the bag of shrimp product. Chill shrimp until used.
Whisk SEI MEE TEA’s “MATCHA Lemon” powder in heavy cream until it becomes a smooth liquid.
Microwave 1 minute with 40% power to warm it up slightly. (Each microwave varies so experiment.)
Add potato/corn starch and mix well.
Microwave 1 minute with 30% power so the mixture thickens slightly but still is silky smooth. Sauce is still runny but it thickens more as it is chilled.
Add a dash of black pepper and ‘Herb de Provence’ (optional). Chill it in fridge for at least half an hour.
Serve with chilled shrimp and chopped basil leaves as garnish.