You will be given a definition of a task first, then some input of the task.
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.

In a large pot, melt the butter over moderately low heat., Add the scallion and celery and cook, stirring occasionally, until the vegetables are soft, about 4 minutes., Sprinkle with flour, and cook roux for 2 minutes, until bubbly., Stir in the stock, milk, and cream. Bring to a simmer, stirring., Add the chopped egg yolks, crabmeat, salt pepper, paprika and Old Bay, and bring almost to a simmer., Ladle into bowls, sprinkle with chopped cooked bacon, and green onion slices.
Output:
butter, scallion, celery, flour, fish stock, milk, heavy cream, egg yolks, lump crabmeat, salt, fresh ground black pepper, paprika, bacon, green onion