“I definitely cook pasta the best, but I’ve learned to walk away and let him get on with it. It’s a metaphor for our relationship.” - Ellen Pompeo, in Eve, about her boyfriend Christopher Ivery and their competition in the kitchen
Ellen has used a superlative adverb in place of a comparative adverb.
In the clause [...]
Adverbs give information about an action or quality’s manner (answering the question “How?”), time (answering the question “When?”), place (answering the question “Where?”), degree (answering the question “How much?” or “To what extent?”), or number (answering the question “How many times?” or “In what order?”).
Bob ate hungrily. (How did he eat?)
Sally went shopping yesterday. (When [...]