Identify the type of figurative language used in the phrase.
"The heat built up like a pressure cooker"
The phrase uses a metaphor to compare the heat to a pressure cooker.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Identify the type of figurative language used in the phrase.

### Response:
The phrase uses a metaphor to compare the heat to a pressure cooker.