I think I read somewhere that starting out with slowly eating an apple is a pretty good way to break a fast. Not sure about the next step though. Like @artemislive comments, oysters after a fast sound like the opposite of wisdom haha.

I must admit though that I never did a 3 day fast so far. Merely intermittent fasting for about 10 months ( with an 8 to 10 hour eating window ) and only water outside these hours.