Flower knife technology refers to the use of knife cutting method, which applies criss-crossing deep and airtight knife lines on raw materials, and heats and curls the knife lines into various beautiful and unique raw materials. The process is complex and the technical difficulty is high. Peony flower knife belongs to the flower knife forming method of plastic fish. When processing, cut a knife mark as deep as the fish bone on both sides of the raw material, then the depth of the flat edge is 2 ~ 2.5 cm, the meat slices are turned up, and then cut a knife on each piece of meat. The raw materials are turned up 7 ~ 12 knives on the sea surface and heated to form the shape of peony petals.

Suitable raw materials include yellow croaker, carp and herring. Examples of uses include making "sweet and sour fish" and so on. Processing requires selecting raw materials with a net weight of about 1 500g, and each piece has the same size. The number of gouges on each side should be equal.

Data supplement: Flower knife refers to the method of drawing a knife line with uniform distance and depth on the surface of raw materials, and then changing the knife into small pieces, which can curl the raw materials into different shapes after heating.

Flower knives generally use the mixed knife method, drawing some deep knife lines on the surface of raw materials, and curling them into various beautiful shapes after processing. When processing, it is usually sliced first and then cut. Spherical flower knife, first cut the raw material into pieces or thick pieces, and then cut a cross knife on one side of the raw material. Knives are closely spaced, and the depth is about two-thirds of the raw material. Then change it into a square or round block, and roll it into a circle after heating.

Chrysanthemum flower knife, first cut one end of the raw material into parallel slices, the depth is about four-fifths of the raw material, then cut down perpendicular to the original parallel lines, the thickness is also four-fifths of the raw material, and the other one-fifth is still connected together, and it becomes chrysanthemum-like after heating.