I don't have any experience with the alcohol industry, but I am a product designer. In my industry, you can go one of 2 ways: 1 a flat rate one time pay out, or 2 a licensing agreement where you get a percentage of the sales of the product. Option 1 can be nice for getting a quick infusion of cash, but you may make less in the long run. Option 2 is a long term play, you'll make less in the short term but more in the long run if the product is successful. In either event, you should hire a lawyer and get everything in writing and all legal-ified.
Value will vary widely industry to industry, I'd try to find someone with experience in the alcohol industry and pick their brain. Might be worth contacting the brewers association and see if they can suggest someone that could help you out.
Congrats on your opportunity and good luck.
Cheers!