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.

Let me give you an example: Preheat oven to 375 degrees., Boil syrup, sugar and shortening over medium heat, stirring constantly., Remove from heat., Gradually stir in flour and nuts., Drop by teaspoonfuls about 3 inches apart on lightly greased cookie sheet., Bake 5 to 6 min., Remove from oven and let stand 5 min, before removing from sheet., May be rolled into cylindrical shape while still hot., If cooled too much, return to oven for a minute., Yield: 4 dozen cookies.
The answer to this example can be: flour, nuts, corn syrup, shortening, brown sugar
Here is why: This is a good example, as we see the NER is generated correctly from the directions.

OK. solve this:
Boil the pasta in salted water according to the instructions on the package., Heat 2 tablespoons of oil in a large non-stick pan, and saute the mushrooms for about 2 mins, then add the leeks and cook for another 3 mins. Season. Drain the pasta and rinse in cold water., With your hands, roll the sausage meat into small, evenly sized balls. Heat a tablespoon of the oil in the pan, then fry the sausage meat balls for 4-5 mins, turning, until they are cooked through. Remove them from the pan and keep warm., Mix the vinegar with the vegetable stock and season, adding a little sugar. Add 2-3 tablespoons of olive oil, then mix in the pasta. Add the parsley, the leeks and mushrooms and the sausage meat balls. Finally, fold in the lettuce leave and serve with some parsley to garnish.
Answer:
macaroni, cherry tomatoes, mushrooms, sausages, oil, romaine lettuce, stalks parsley, white wine vinegar, vegetable stock, sugar