Question: Prem is similar to the luncheon loaf made by what company?

Context paragraphs:
Spam (food): Spam (stylized SPAM) is a brand of canned cooked meat made by Hormel Foods Corporation.  It was first introduced in 1937 and gained popularity worldwide after its use during World War II.  By 2003, Spam was sold in 41 countries on six continents and trademarked in over 100 countries (except in the Middle East and North Africa).  In 2007, the seven billionth can of Spam was sold.

Desem: Desem (Dutch for "leaven") is a type of sourdough starter made from whole wheat, spelt or other flours (amaranth or kamut) and water, inoculated by wild yeasts and bacteria, traditionally used in Belgium to make healthy, nutrient-rich bread.  The starter is grown in a bed of flour at cool temperatures until it reaches sufficient maturity.  The term "desem" also describes the loaf made with this starter.  Desem bread made from a mature desem is characterized by a strong rise, and a light texture, and nutty, slightly sour taste.  The loaf is similar in process to the French "pain au levain", but made with whole wheat flour and starter instead of white flour.

Pimento loaf: Pimiento loaf, also commonly spelled pimento loaf, also called pickle and pimiento loaf or P&P loaf, is a loaf-type luncheon meat containing finely chopped beef and pork, as well as chopped pickles and pimientos.  After being formed into a loaf and cooked, the loaf is kept whole so it can be sliced and served cold as deli meat.  Pimento loaf is closely related to olive loaf (the primary difference being pimentos and pickles replacing pimento-stuffed olives) and spiced luncheon loaf.  It is distantly related to ham and cheese loaf.

Dutch loaf: Dutch loaf (also called old-fashioned loaf, spiced luncheon loaf, and spiced lunch meat) is a luncheon meat made from coarse-ground lean pork and beef mixed or coated with spices, formed into a loaf shape and then smoked over a hardwood fire.  It is a popular sandwich filler in America.  Most major deli-meat companies make their own variation.

Prem (food): Prem is a brand of canned meat (called "luncheon loaf").  Prem is a brand of Zwanenberg Food Group and is made in the United States.  In Canada, it is a trademark of Maple Leaf Foods Inc./Les Aliments Maple Leaf Inc. and is a luncheon meat made in Canada sold under the Swift brand as Swift's Prem.  Prem is similar to Spam and was shipped to England during World War II.

Casa De Carne Tour: Casa de Carne(Spanish for "House of Meat") is the name of Meat Loaf's 2008 European Summer Tour.  After his 2007 tour was cut short due to a cyst on his vocal cord, Meat Loaf returned to the stage.  To the delight of fans, Meat Loaf made his return alongside his longtime duet partner Patti Russo, who debuted one of her own original songs during Loaf's show.  The tour kicked off in Plymouth, England on 27 June 2008 and continued through July and August with 20 showdates throughout Europe.  Six United States showdates were also added for October and December 2008.

Lammas: Lammas Day (Anglo-Saxon "hlaf-mas", "loaf-mass"), is a holiday celebrated in some English-speaking countries in the Northern Hemisphere, usually between 1 August and 1 September.  It is a festival to mark the annual wheat harvest, and is the first harvest festival of the year.  On this day it was customary to bring to church a loaf made from the new crop, which began to be harvested at Lammastide, which falls at the halfway point between the summer Solstice and Autumn September Equinox.

Plain loaf: A plain loaf, slices of which are known in Scots as plain breid (pronounced ] ), is a traditional style of loaf made chiefly in Scotland and Ireland.  It has a dark, well-fired crust on the top and bottom of the bread.  There is no crust on the sides due to the unbaked loaves being stuck together in batches, baked together then torn into individual loaves afterwards.  The term batch loaf is sometimes used.  This style of bread does not fit well in most modern toasters due to the greater height of the loaf.  This was once the more widely available style of loaf in comparison to the now more common pan loaf.

The Casa de Carne Tour: Casa de Carne(Spanish for "House of Meat") is the name of Meat Loaf's 2008 European Summer Tour.  After his 2007 tour was cut short due to a cyst on his vocal cord, Meat Loaf returned to the stage.  To the delight of fans, Meat Loaf made his return alongside his longtime duet partner Patti Russo, who debuted one of her own original songs during Loaf's show.  The tour kicked off in Plymouth, England on 27 June 2008 and continued through July and August with 20 showdates throughout Europe.  Six United States showdates were also added for October and December 2008.

Treet: Treet is a canned meat product, similar to Spam, marketed by Armour/Pinnacle Foods in the USA.  Sold as "spiced luncheon loaf", it is made with chicken and pork and has a more finely ground texture than Spam, more akin to bologna or vienna sausages. Like Spam, it is often fried or baked before consumption.

Supporting paragraphs: Prem (food) Spam (food)
Answer: Hormel Foods Corporation