Given the task definition and input, reply with output. In this task, you have to identify the named entities (NER) which are the ingredients required given its directions. Named entities are the names of the items without their quantity.

Heat oven to 425., Grease (9 x 1 1/4-inch) pie plate. Prepare mashed potatoes as directed on package for 4 servings except decrease water to 1 cup and omit milk., Stir in egg, green onions and sour cream., Press potato mixture against bottom and sides of pie plate., Prick bottom and side with fork., Bake 15 minutes.
potatoes, egg, onions, sour cream, ground beef, green pepper, onion, tomato sauce, olives, chili powder, salt, clove garlic, cheese