The creamy sauce will only have a slight lemon taste without the zest, so be sure to include it if you want a pronounced lemon flavor.Whisk the cornstarch into the milk until completely dissolved. Whisk in all remaining ingredients. Slowly bring to a boil over low-medium heat. Stir occasionally at first, then constantly once it starts to thicken. Turn off the heat, and season as desired. Pour over pasta, roasted vegetables, or whatever you wish.View Nutrition Facts