Which item is known for being shredded into 1/4" strands with evenly mixed fat?

Barbacoa is known for being shredded into 1/4" strands with evenly mixed fat, which contributes to its rich flavor and tender texture. When prepared, the beef used in barbacoa is typically slow-cooked until it becomes very tender and can be easily shredded. The mixture of fat helps to keep the meat moist and flavorful, enhancing the overall eating experience.

Other options represent different types of menu items. Chicken, while also a protein option, is usually grilled or diced rather than shredded in the manner characteristic of barbacoa. Pico de gallo is a fresh salsa made of chopped tomatoes, onions, and cilantro; it has no meat and thus does not involve shredding. Guacamole is a creamy avocado-based dip, which is also not relevant to the question about shredded meat. Therefore, barbacoa stands out as the item that matches the description given in the question.