Porcini is a type of mushroom that is widely used in the culinary world because of its delicious earthy flavor. However, it is not always available year-round, which is why it is important to know some synonyms to substitute it seamlessly in your recipes. One of the most common alternatives is morel mushroom, which also has a nutty and rich taste. Another great option is the shiitake mushroom, which is widely available and has a meaty texture. Other options include chanterelle mushroom, cremini mushroom, and button mushroom. Each of these substitutes comes with its unique taste and texture, so it's best to experiment and see which works best for your dish.