Amy Tan compares tofu to stacked wedges of rubbery white sponges. How does this description make the reader feel about the tofu?

The reader has a hard time picturing tofu that looks like a sponge.
The tofu does not seem like something that should be eaten.
The reader must decide whether tofu is a tasty food or a disgusting food.
The tofu must be useful for more than just eating.