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.

In a large saucepan filled with water, boil Brussels sprouts for 5 minutes., Drain., In a large saucepan, melt butter over medium heat., Add carrots and onion and cook, stirring, until onions turn golden, 4-5 minutes., Reduce heat to low and add Brussels sprouts., Cover and cook, stirring occasionally to prevent vegetables from sticking, until sprouts are very soft, 15-20 minutes., Add pesto sauce and stir to blend., Serve hot.
Brussels, butter, white pearl onion, carrot, pesto sauce