Brazillian "traditional" feijoada?

Hi, is there a “traditional” authentic Brazillian recipe for feijoada? I’ve tried a few recipies I’ve found on the web and the tube. Some with beef, some without. Some with just bay leaves, some with more spices. I know everyone varies their recipes to what they prefer. But is there such thing as an “traditional authentic” feijoada recipe out there?

The reason I’m asking is that one of the restaurants in town has an amazing feijoada (“passed on through generations”). I’d like to think myself as a pretty accomplished cook but I’ve never even come close with my own attempts by following any recipes online for this dish. Pressure cooker or slow simmer… I’ve not been able to replicate the taste from this restaurant. I must be missing something. Help?