Physically hamburger is a food that has a circular shape that contains bread, meat, and vegetables are prepared and upwards.
Hamburger (or sometimes called a burger) is a kind of food in the form of round bread that is sliced in half and filled with patty ditengahnya usually taken from the meat, then vegetables such as lettuce, tomatoes and onions.
In many countries, many of which vary burger to suit their own taste, there are replacing the use of beef with pork, squid, fish, shrimp and lobster in fact also been used.
Some examples are quite unique burger is Rice burgers, the food is found in Japan, China, and Taiwan, they use rice instead of bread on their burgers.
Some people also vary the vegetarian burger to replace the use of meat on a burger with gluten, also there Tofu burger that uses out as a meat substitute.