Sharpening to the ideal angle. Very sharp knives sharpen at about 10 dps (degrees per side) (which implies that the knife's edge has an included angle of 20-degrees). Generally speaking, razors, paring knives, and fillet knives should be the sharpest knives at an angle of 12° – 18°. Most kitchen knives, like utility/slicing knives, chef’s knives, boning knives, carving knives, should be sharpened to 15° – 25°. The exceptions are Japanese style knives that are usually sharpened to 14° – 16° depending on the knife maker. Japanese style knives utilize a much harder steel, and are therefore more brittle than their
Sashimi when bacteria or parasites are present; for example, anisakiasis is a disease caused by the accidental ingestion of larval nematodes in the family Anisakidae, primarily "Anisakis simplex" but also "Pseudoterranova decipiens". In addition, incorrectly prepared Fugu fish may contain tetrodotoxin, a potent neurotoxin. Another type of food borne illness that could occur after consuming tainted sashimi is Diphyllobothriasis. This disease is an infection within the intestines that occurs when the tapeworm "Diphyllobothrium latum" is consumed. Common fish such as trout, salmon, pike, and sea bass harbor this parasitic larvae in their muscles. Due to the new innovation of the chilled