Saute garlic and rosemary in oil in medium heat for 3 minutes. Add salt and peppers and continue sauteing for an additional 5 minutes. Add water and turmeric. Stir and bring to a boil. Add couscous, stir, cover and simmer for 2 minutes or until all water is absorbed. Cover and remove from heat. Let sit for 5-10 minutes. Uncover, fluff with fork and enjoy.