Nothing goes better with that cold beverage than a crunchy bite-sized snack.
For us humans, that is usually beer nuts or trail mix (sometimes popcorn), but for a cat, it is more like these Temptations Treats.
Any treats will do, these are just some very low-cost ones that are easy for everyone to find. A meager handful of any such a treat next to the frozen shot glass for your cat is all it takes.
Let the cat sniff the treat first, gauge their reaction, and if positive, then put it down in front of their nose and pet them to let them know it is for them. Repeat till interest wanes.
Sometimes these treats smell so good to the cat, that the poor animal thinks such a treat is clearly for human and may hesitate to eat it without such acknowledgement from their owner first.