DON'T CALL YOUR LAWYER!!!! Call your INSPECTOR!!!! Most lawyers don't have a clue about food related issues. For that matter, I've found it difficult to find a lawyer who has a clue about the self-employed side of business.
If you want to use a "brand name" alcohol, then contact that company.
(edit to incorporate TheBoss's next comments)
If the product "must have" XXXX=brand alcohol in the recipe, then the processor needs to get clearance from XXXX=brand alcohol to be listed on the label. Rum is Rum, Tequila is Tequila....and in a sauce....x-rum -vs- y-rum will not make any difference in the taste of the sauce. If it does make a difference, then it might be worth it to the producer to get clearance to use x-rum's brand name on the label.
edit- look at this from a business 101 point of view. Everything I do as an electrical contractor is governed by the NEC, WAC/RCW's and is subject to inspection and approval from the state electrial inspector (aka the Authority Having Juristicion aka AHJ). If they sign off on work I've done, they are saying it's safe and appropriate. If something goes wrong down the road, and it's something they've inspected, the blame goes to them.
As a food processor, every product I make and sell has gone through multiple approvals and reviews. As long as I follow the process as dictated by the PA (aka Process Authority) and my labels and facility have been approved by my state inspector....I'm good to go! THEY are my AHJ's for the food business. Sometimes the FDA is another AHJ depending on the product, ingredients, and processes.
Laywers don't have squat to do with the food business, at least on the food side of things. Yes, they do business things, like Corps etc, but they are the absolute LAST person to talk to about this issue of alcohol in food.
Just my opinion based on my experiences. Different states have different regulations. Talk to your state and local health district authorities.