In a medium saucepan, bring two cups of water to a boil. Add tea bags. Remove from heat and steep tea for 2 minutes. Remove and discard tea bags.
Add salt, turmeric, and couscous to pan. Stir and cover. Simmer over very low heat for 5 minutes or until the liquid is absorbed. Remove from heat and let stand for 2 to 3 minutes.
Add lemon juice, garlic, and oil; fluff with a fork. Let it cool a bit.
Stir in grapes and cucumber. Garnish with pine nuts and basil.