Black bean burger

A veggie burger is a hamburger made with a patty that does not contain meat, or the patty of such a hamburger. The patty may be made from ingredients like beans , nuts, grains, seeds, or fungi such as mushrooms or mycoprotein. The essence of the veggie burger patty has existed in various Eurasian cuisines for millennia, including in the form of grilled or fried meatless discs, or as koftas, a commonplace item in Indian cuisine. These may be made of entirely vegetarian ingredients such as legumes or other plant-derived proteins.

Source: Wikipedia