So, use this product and research other similar products within that industry. You know that Hennessy is a cognac and that industry is alcoholic beverages. You have a product, but you don't have the name of the firm. You need to know the company that makes this product. At this website you can do a search using liquor.
Several codes appear.
Click on the code to get a description of the industry. This database allows you to search by brand name. Once you click on a company, the products they produce are listed near the bottom. The SIC codes for the products the company produces are also listed. You can click on the code and then do a search to get the Market Share Reports, Industry Essays, Rankings, Statistics, and Companies in Industry.