Yeah I don’t know how you could make it work for past ratings…
Ideally, the rating should be linked to an assigned BeerID, then aliased beer are just redirected to another BeerID but for user profiles, the original BeerID is kept, just redirected.
For aliased ratings, it could even have an automated mention added to the user review upon alias creation: " Rated as beer alias BEER ALIASED NAME" (similar to the automated mention added when 2 ratings are merged for duplicates: “notes from earlier rating”)
Also, the Alias beer should have a mention of aliased beers linked to it, not only the other way around. Both in the search and in their profile.
For example, in our PRINTABLE BEER LIST (from My Account), the Alias beer name is displayed with all aliased beer name under it (it already exists, so its definitely possible to do)
Bièropholie Brune de Septembre
Also known as Le Chaudron La Médiévale - Le Chaudron La Paysanne - Le Chaudron St-Charles Brune Allemande