Which plantain preparation is served with Porto's entrees?

Maduros, which are ripe fried plantains, are a popular side dish at Porto's and are often served with various entrees. They are prepared by slicing ripe plantains lengthwise or crosswise and frying them until they turn golden brown and caramelized. This preparation emphasizes the sweetness and soft texture of the ripe plantains, making them a delightful accompaniment to savory dishes.

The other options, while also related to plantains or similar foods, do not represent the specific preparation typically served with Porto's entrees. Pico de gallo is a fresh salsa made primarily from tomatoes, onions, and cilantro, which does not involve plantains. Patacones, also known as tostones, are twice-fried green plantains and have a different texture and flavor profile compared to maduros. Fried plantain slices could refer to either maduros or tostones, but in the context of the menu at Porto's, maduros are specifically recognized as the standard accompanying side.