500g Italian balsamic vinegar, 300g rock sugar, 150g honey, 40g chicken rice and dark soy sauce, 25g lemon juice, 5g dried osmanthus. According to the search on the Kitchen Food App, the commercial formula for concentrated black vinegar juice has the following proportions: 500 grams of Italian balsamic vinegar, 300 grams of rock sugar, 150 grams of honey, 40 grams of chicken rice and dark soy sauce, 25 grams of lemon juice, and 5 grams of dried osmanthus. Simmer the above seasonings over low heat until thickened, turn off the heat and sprinkle in the dried osmanthus.