Hamburger examples include the rice burger, where the bun is made of rice, and the luxury 1000-yen (US$10) "Takumi Burger" (meaning "artisan taste"), featuring avocados, freshly grated wasabi, and other rare seasonal ingredients. In terms of the actual patty, there are burgers made with Kobe beef, butchered from cows that are fed with beer and massaged daily. McDonald's Japan also recently launched a McPork burger, made with U.S. pork. McDonald's has been gradually losing market share in Japan to these local hamburger chains, due in part to the preference of Japanese diners for fresh ingredients and more refined, "upscale" hamburger offerings.
Hamburger burger uses ground venison from deer. A "veggie burger", "black bean burger", "garden burger", or "tofu burger" uses a meat analogue, a meat substitute such as tofu, TVP, seitan (wheat gluten), quorn, beans, grains or an assortment of vegetables, ground up and mashed into patties. A steak burger is marketing term for a hamburger claimed to be of superior quality. or, in Australia, a sandwich containing a steak. Steak burgers are first mentioned in the 1920s. Like other hamburgers, they may be prepared with various accompaniments and toppings. Use of the term "steakburger" dates to the 1920s in the United