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A cheese knife is a type of kitchen knife specialized for the cutting of cheese. Different cheeses require different knives, according primarily to hardness; most often "cheese knife" refers to a knife designed for soft cheese.
Soft cheese knives
Soft cheeses require a sharp knife. As these cheeses are often sticky, a cheese knife will be serrated and often have holes to prevent sticking.
Soft cheese knives are designed to deal with the stickiness of soft cheese. When the cheese does not stick to the blade, it allows for pieces of cheese to be presented more attractively, with crisper shapes compared to cheese cut with standard knives.
The blades of cheese knives are usually made of a material such as stainless steel, which is resistant to the stickiness of cheese. Another design feature often found is the presence of holes in the blade to help to prevent the cheese from sticking to it. Some soft cheese knives also include a ridge, which runs vertically near the top of the blade. This helps separate the cheese as it is being sliced. Some cheese knives have a forked end and is used for serving slices of cheese.
Furthermore, the shape is unusual. Most knives have a blade that is wide at the base and tapers to the tip. A cheese knife, on the other hand, is similar to a cleaver in that it starts out thinner at the handle and then gets wider away from the base. Some cheese knives have angled handles to make an easier cut.
The non-sticky characteristics of a cheese knife also makes them useful for cutting other sticky foods, such as cakes, eggs, and pies; compare also egg slicer.
Hard cheese knives
Various non-knife devices are used for cutting cheese, such as a wire cheese cutter, which completely avoids adhesion, a cheese slicer, used primarily for thin slices of medium-hard cheeses, used especially in Scandinavia for cutting cheese for sandwiches, and the girolle, used to cut the hard Tête de Moine cheese by scraping.
A cheese slicer is used usually to cut semi-hard and hard cheeses. It produces thin, even slices. There are different styles of cheese slicers, designed for cheeses of varying hardness. A cheese slicer can be also used for slicing cold butter, zucchini, cucumber or cabbage.
Ostehøvel, a modern cheese slicer or cheese plane, was invented by Thor Bjørklund in 1925 in Norway.Mass production of the Ostehøvel cheese slicer started during 1927 in Lillehammer, Norway. The design was based on the carpenter's plane. This style of slicer is very common in the Nordic countries, and in the Netherlands, Belgium and Germany.  
Cheese cutters are designed to cut soft, sticky cheeses (moist and oily), and accordingly does not have a large sharp-edged blade; compare to a cheese knife with holes in the blade. The cutting edge of cheese cutters are typically a fine gauge stainless steel or aluminium wire (a "cheesewire") stretched across a supporting frame. The thin wire cuts through a cheese block with hand pressure.
The original Prodyne Gourmet Cheese Slicer had a wooden board with a slot cut into it and a hole through which one end of a U-shaped steel cutting arm was inserted. In the patented design, a stainless steel wire extends between the two ends of the cutting arm fit into the slot, and cuts the cheese. The wire has loops at each end; one loop is around the steel cutting arm in the slot, while the other passes around a metal pin though a plastic handle on the other end of the cutting arm. The plastic handle rotates upward to tighten the wire, and is secured to the cutting arm with a screw.
The board-style cheese slicer has been expanded to include marble, stainless steel, and plastic cutting boards. Several other designs of handles and wire holders have also been invented to hold the cutting wires of cheese slicing boards. Many of these wires have loops on the ends like the Prodyne models; others have small rings or knots that fit into a slot on the handle and cutting arm.
The girolle is a utensil for scraping Tête de Moine Swiss cheese into the form of rosettes that resemble chanterelle mushrooms (also known as girolle in French, hence the name of the device). This cheese was traditionally scraped with a knife. The girolle was invented in 1982 by Nicolas Crevoisier of the Swiss Jura and is produced by the Métafil-laGirolle company.
- Mary Bellis. "Cheese Slicer". About.com. Retrieved 3 December 2013.
- "Thor Bjørklund". Norsk biografisk leksikon. Retrieved December 15, 2016.
- About Us: History (Thor Bjørklund & Sønner AS)
- Mats Linder. "Ostehøvel". Store norske leksikon. Retrieved December 15, 2016.
- "What is a Cheese Slicer?". wiseGEEK. Retrieved 14 November 2013.
- "The Girolle originale – a device for shaping cheese". www.girolle.ch. Retrieved 18 March 2011.
Media related to Cheese slicer at Wikimedia Commons