First of all, I like to season my chicken breasts with Asian 5 Spice for an hour or two before cooking them. If I don't have time to grill them, I use Tyson's precooked grilled chicken strips.
Grill the chicken breasts until done. Cut into strips and set aside to keep warm.
Mix garlic, ginger, lemon juic, oil, sugar, and soy sauce over low heart. Whisk continually until sugar disolves. Mix flour with water in a seperate bowl and set aside. When sauce warms up, add flour mixture a teaspoon at a time until sauce thickens.
Serve chicken over steamed rice and drizzle sauce over it. Serve while warm.