(I’m not an App user but I develop my own desktop tools, so these are just a couple of suggestions)
1. Your use cases.
I did some homework and I already know which beers will be available at a festival or brewery I will visit.
Most of my homework is done on desktop/laptop.
At the festival Internet may be available, but I don’t want to spend time looking up again.
I want to quickly remember that I need to try the Rum variant, not the Bourbon variant.
2. Your approach.
Pre-load the offline list with beer already taken from the RB database (available beers at a festival are often known in advance, same when visiting breweries).
Since I prepared my list on a computer, I must be able to see the data with both front ends.
At the festival just use the list to write the ratings.
(as a reference for the visibility between mobile and computer, think of how Google Keep works)
