Hotel owners certainly can't contribute voluntarily. Most restaurants buy frozen bones from wholesale markets. We usually buy fresh bones from pigs, and using frozen spines for self-help sauce is the cheapest bone. In fact, we can buy such frozen bones in a certain east treasure, and it is estimated that there are cheaper frozen bones in the wholesale market. Where did the frozen spine come from? It's so cheap, many friends who sell bones say it's imported bones, and foreigners don't like to eat bones and order goods.
Of course, those who do catering first will pay more attention to cost, and the lower the cost, the greater the profit. Like many meats, they will buy frozen products, because frozen products are cheaper than fresh ones, and big bones are no exception. Why should it be cheaper after freezing? Why should the merchants freeze it instead of selling it directly? Of course, the price is related to the source of these things. The function of freezing is to prolong the preservation time. There is no doubt that it needs long-distance transportation, so the most likely thing is to import.
Some "black-hearted" buffet merchants unfreeze these frozen bone bars and frozen meat that have exceeded the shelf life. Before processing the finished products, they first blanch them with hot water to remove the fishy smell and peculiar smell on the bone bars, and at the same time, add a lot of seasonings to cover up the freshness of all kinds of bone bars and meat. They often make this kind of big bone stick spicy, and even add excessive fresh-keeping agent to improve the taste of food, and put it in the cafeteria openly. From this, we can see the secret that the sauce bone sticks in many cafeterias are very cheap.