This is a delicious recipe I found on a blog. Traditionally, the meat is beef or pork, but this recipe uses chicken. Tomatillos look like green tomatoes, but with a husk on the outside. They range from the size of a cherry tomato to the size of a clementine. You want to buy tomatillos that are firm to the touch, bright green, with the husk still close to the tomatillo. Prep time is inactive.