What should be added to make the food more tough and the soup not go bad easily? No chemical additives can be added.

I am glad to answer your question: if chemical additives are not added, there is no effective substitute for commercial food processing at present. As a food additive, edible gum plays an important role in meeting people's needs. Commonly used edible gums: guar gum, sodium alginate, modified starch, Artemisia gum, coagulated polysaccharide, CMC, etc. Generally, it will melt if cooked for too long. Helpful are compound phosphates, carbonates and emulsifiers. You can try. At present, there are eight kinds of phosphates approved for use in China, including sodium tripolyphosphate, sodium hexametaphosphate, sodium pyrophosphate, trisodium phosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate, acid sodium pyrophosphate and disodium dihydrogen pyrophosphate. Adding these substances into food will help to diversify food varieties, improve their color, aroma, taste and shape, maintain the freshness and quality of food and meet the needs of processing technology. Compound phosphate is a general term for two or more phosphates used in food processing. I hope it helps you, and I wish you a happy life.