In heraldry and vexillology, the double-headed eagle is a charge associated with the concept of Empire.
 Most modern uses of the symbol are directly or indirectly associated with its use by the Roman/Byzantine Empire, whose use of it represented the Empire's dominion over the Near East and the West.
 But the symbol itself is, in fact, much older, and its original meaning is debated among scholars.
 The eagle by itself has long been a symbol of power and dominion.
X-tra is a private label brand used by Coop Norden on their low-price produce.
 The products offered with the brand cover a wide range of products, including but not limited to canned food, coffee, cereal, juice, jam, light bulbs, cooking oil, shampoo, pasta, eggs and meat.
 The products are produced by a number of different companies, some of which are owned by Coop Norden.
 Products are optimised for low cost and may have lower quality than premium brands, including the chain's own store brand "Coop" as well as Coop Kaffe and Røra.
Luck's Incorporated was a food production company founded in Seagrove, North Carolina, in 1947, which produced a line of canned bean and other canned food products.
 For a period of time, it was one of the largest employers in the area and its canned food products were a staple in many Southern homes.
 It is now a brand of Arizona Canning Company, after a recent divestment by ConAgra
Canning is a method of preserving food in which the food contents are processed and sealed in an airtight container.
 Canning provides a shelf life typically ranging from one to five years, although under specific circumstances it can be much longer.
 A freeze-dried canned product, such as canned dried lentils, could last as long as 30 years in an edible state.
 In 1974, samples of canned food from the wreck of the "Bertrand", a steamboat that sank in the Missouri River in 1865, were tested by the National Food Processors Association.
 Although appearance, smell and vitamin content had deteriorated, there was no trace of microbial growth and the 109-year-old food was determined to be still safe to eat.
Puin (Russian: Пуин ) also spelled PuTin (Russian: ПуТин ) is a brand of vegetable and mushrooms canned goods produced by "Astrakhan Canned-food Plant" (Astarkhanskiy Konservniy Kombinat) and its parent company "Russian Canned-food Plant" (Russkiy Konservniy Kombinat).
 The official name of the brand is Puin but the logo is crossed by the T-shaped sword (a KGB symbol) making the impression that the brand is PuTin, similar to the name of Russian President Vladimir Putin.
 The logo is put on the background of a Double-headed eagle very similar but not identical to the Coat of arms of Russia.
 The official logo was developed in 2007 to compete with Ukrainian brand Veres that currently takes approximately 70% share of all the canned food sold in Russian supermarkets.
 According to the owners of the trademark the logo increased their sales by 35-40%.
Canstruction is a United States 501(c)(3) nonprofit organization providing canned food to local food banks in cities holding Canstruction competitions.
 Canstruction is an international charity competition where architects, engineers, contractors and students they mentor, compete to design and build giant structures made entirely from full cans of food.
 At the close of the competition all of the food is donated to local food banks where the competitions are held.
 Canstruction was founded in 1992 by Cheri Melillo and has since raised millions of pounds of food for food banks in participating cities across the world.
 With more than 170 cities and over 30,000 volunteers participating in Canstruction competitions, Canstruction has grown to become one of the largest food drives for food bank donations in the world.
Yu Kee Food Company Limited (), or Yu Kee (), is one of the food chain supermarkets in Hong Kong.
 It was established in 1990, initially as small family store.
 It had, at its peak time, around 70 stores all over Hong Kong.
 Its sold products include frozen food, fruits, dried food, canned food, vegetables and herbs, and they are sold at relatively lower prices than other supermarkets.
 However, because of financial difficulties, its business shrank.
 On 29 August 2011, it went into liquidation because of inability to settle its trade debt.
Malher S.A. is a Guatemalan food products and beverages company; it offers a variety of products in all Central America and the Caribbean region.
 Malher's products comes between food seasoning, canned food and fruit-flavored soft drinks.
 The name "Malher" comes from the words, "Maldonado Hermanos" which means Maldonado brothers.
 Miguel Ángel named it after his 2 other brothers, Jorge Efrain and Max.
Castleberry's Food Company is an Augusta, Georgia-based canned food company founded in the 1920s by Clement Stewart Castleberry with the help of his father Clement Lamar Castleberry and closed in March 2008 by the United States Food and Drug Administration until Hanover Foods bought the rights to Castleberry's food and name.
Bush Brothers & Company is a family-owned corporation best known for its Bush's Best brand canned baked beans.
 The company produces approximately 80 percent of the canned baked beans consumed in the United States, representing estimated annual sales in excess of $400 million and the processing of more than 55 million pounds of beans per year.
 In addition, the company also offers other canned beans (black, garbanzo, pinto, and refried), as well as peas, hominy, and cut green beans.
 Based in Knoxville, Tennessee, Bush Brothers operates plants in Augusta, Wisconsin and Chestnut Hill, Tennessee.
 Its canned goods are sold through retail food outlets and food service operators throughout the United States and Canada.

Question: The Russian canned food brand "PuTin" features a logo which makes use of what symbol which is associated with the concept of empire?
Answer: Double-headed eagle