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.

Example input: 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.
Example output: flour, nuts, corn syrup, shortening, brown sugar
Example explanation: This is a good example, as we see the NER is generated correctly from the directions.
Q: Cook potatoes in large pot of boiling salted water until just tender, about 25 minutes., Drain; cool., Cut potatoes into quarters., Transfer to large bowl; add vinegar and toss to coat., Mix in celery and peas., Whisk mayonnaise, 5 tablespoons chives, mustard, garlic, and cayenne pepper in small bowl to blend., Add to potato mixture and toss., Season generously with salt and pepper., Cover and chill at least 1 hour to allow flavors to blend., (Can be made 1 day ahead., Keep refrigerated.), Sprinkle with remaining 1 tablespoon chives and serve.
A:
potatoes, white wine vinegar, celery stalks, frozen green peas, mayonnaise, fresh chives, mustard, garlic, cayenne pepper