How To Keep Apples From Browning MOMables.com Site shows how to keep cut apples for a week using all natural preservatives and does a visual comparison between lemon juice, powdered citric acid and what happens to untreated apples.
Combine yogurt and vanilla in a bowl. Spoon 1/3 cup yogurt mixture into each of 4 small parfait glasses; top each with 1/2 teaspoon honey, 5 clementine sections, and 1/2 tablespoon nuts. Top parfaits with the remaining yogurt mixture (about 1/3 cup each); top each with 1/2 teaspoon honey, 2 clementine segments, and 1/2 tablespoon nuts. Serve immediately.