<Ul> <Li> The Mega Mac or Double Big Mac: four 1.6 oz (45.4 g) beef patties and an extra slice of cheese . Available in Canada, China, Egypt, Ireland, Japan, Malaysia (during promotional periods only), Turkey, Singapore, Pakistan, South Korea, and Thailand . In New Zealand and Australia it was discontinued and replaced by the Grand Big Mac . In the United States, buyers can ask to double their Big Mac with two additional patties, although this option is limited to certain states . The Double Big Mac is the biggest regular hamburger the chain produces and it has 680 calories . </Li> <Li> Big Big Mac: a Quarter Pounder--like product sold in Europe (Finland, Belgium, Spain, Portugal, and Italy). Has been sold periodically in Sweden, there called "Grand Big Mac" (where "Grand" was pronounced in British, not American, English, in their advertising). </Li> <Li> The Denali Mac: made with two quarter pound patties . Named after Denali in Alaska, and sold only in that state . Also known as the Bigger Big Mac as a limited - time offer product to celebrate the 2006 FIFA World Cup . </Li> <Li> In India, where consuming beef is illegal in most states, the Big Mac is known as the Maharaja Mac and was originally made with lamb instead of beef; however, along with the company's other items, it is now made from chicken . A vegetarian option is also available, substituting corn patties in the place of beef . </Li> <Li> The Chicken Big Mac is a Big Mac with two breaded chicken patties sold in Pakistan, Egypt, UAE, Kuwait, and Qatar . </Li> <Li> The Giga Big Mac, is sold in Japan . It is a larger version of the Big Mac with three times the meat of a regular one . </Li> <Li> Mac Jr. is a reduction of the standard Big Mac . It uses a two - piece bun and contains only one beef patty . Available in the U.S. beginning in 2017 . </Li> </Ul> <Li> The Mega Mac or Double Big Mac: four 1.6 oz (45.4 g) beef patties and an extra slice of cheese . Available in Canada, China, Egypt, Ireland, Japan, Malaysia (during promotional periods only), Turkey, Singapore, Pakistan, South Korea, and Thailand . In New Zealand and Australia it was discontinued and replaced by the Grand Big Mac . In the United States, buyers can ask to double their Big Mac with two additional patties, although this option is limited to certain states . The Double Big Mac is the biggest regular hamburger the chain produces and it has 680 calories . </Li> <Li> Big Big Mac: a Quarter Pounder--like product sold in Europe (Finland, Belgium, Spain, Portugal, and Italy). Has been sold periodically in Sweden, there called "Grand Big Mac" (where "Grand" was pronounced in British, not American, English, in their advertising). </Li> <Li> The Denali Mac: made with two quarter pound patties . Named after Denali in Alaska, and sold only in that state . Also known as the Bigger Big Mac as a limited - time offer product to celebrate the 2006 FIFA World Cup . </Li>

What is the middle bun in a big mac called