How to make turtle glue board?

Turtle plate gum production:

(1) ingredients take turtle plate 3.125kg, rock sugar 0.156kg, soybean oil 0.047kg, 0.094kg of yellow wine.

(2) decoct the gum juice to put the processed turtle plate in a copper pot, add water to submerge over the surface, heated with a warm fire, keep slightly boiled for 1 to 2 days, pour out the decoction. Successive **** decoction 3 to 5 times, until fully decocted gum juice.

(3) filtration and clarification of concentrated each decoction of gum, filtering to remove precipitation impurities. First filtered with a fine sieve, and then filtered with silk cotton, and add alum in stages, stirring amalgam, and then filtered after settling.

(4) concentrated gum will be clarified in a copper pot with warm fire heating and concentration, stirring constantly to prevent scorching, until the gum is not permeable to paper, add a certain amount of rock sugar, wine and vegetable oil to make the mixture homogeneous, does not show the oil flower. To be concentrated to viscous after the collection of glue, poured into the gel tray, let it condense naturally. In order to speed up the gelatin solidification, you can also add 5% to 10% of the gum to help the turtle plate gelatin solidification.

(5) Slicing and dryingTake out the solidified gelatin block, cut it into small slices with a gelatin cutter, and dry it for packaging. Produced turtle plate is brownish green nearly translucent. High-quality gum length 3.0cm, width 3.0cm, thickness 1.0cm, each slice weighs about 5g.