Acorn cold noodles acorns can be eaten. However, some acorns (especially the black acorns of red oak) contain a lot of tannins. If you eat them directly without treatment, you will feel bitter astringent. The green acorn of white oak has lower tannin content sweeter taste, which can be eaten raw cooked. The basic method of acorn is to cook it for a long time change the water to remove the tannin contained in it. After cooking, it can be eaten directly. Acorn can also be baked mixed with flour. Acorn flour often has a special fragrance. Since acorn contains more oil, acorn flour must be stored carefully to avoid harshness. Acorn powder can also be used as a coffee companion. Main ingredients: beef (ribs tendons), scallion white, garlic, buckwheat noodles (cold noodles - this noodle is specially made, which is hard to buy in other places except Xuzhou. The uncooked noodles will become sticky lose the taste when cooked directly, so it must be soaked in cold water until it is soft then scalded), coriander. The materials for making soup: big bone soup, beef (mutton) soup, salt, vinegar, spices for boiling soup, production steps, Cook the cleaned beef mutton big bone spareribs with green onion, ginger, garlic spices in boiling water until an iron fork can be inserted. Remove the meat (the meat can be added to the cold noodles later, the old soup is used to make the noodle soup). Cut the scallion, coriander buckwheat noodles (cold noodles) soak them in water (if it is cold water, it will take a long time, generally use 50 degree hot water to soak). Prepare the noodles noodles After the soup, put the cold noodles in boiling water soften until the noodles are smooth (usually 6 to 10 seconds). In the bowl, gently pour the big bone soup with boiled meat, then put the hot cold noodles into the bone soup. On the noodles, put the sliced beef slices the boiled sauce (each restaurant has different sauce, so the taste is different), of course, scallion coriander (stir fried chili noodles vinegar with appropriate amount of oil) serve them. It's hot sour. It's very delicious for the local people to go home. North Korea cold noodles special noodle juice: prepare scallion ginger slices, as well as white vinegar red vinegar, which can be bought in supermarkets. Then put the scallion ginger slices together with a little pepper large ingredients into the pot, add a little water, open fire to boil it, we can see that the juice in the pot has turned red, then filter out the raw materials, add a little red vinegar white vinegar, a small amount of salt, monosodium glutamate, sugar, so that the sour sweet noodle juice is ready. Next, just put it into the refrigerator to cool.