So I am looking for a good way to get a lot of rare candies easily. I found a way (the Pokemon Cafe) but I want ot know what happens after I have fed my Pokemon more than the amount for the last rare candy is? Does it restart or does it just end? As a good player in the Gts once said, "Thanks in advance"
It just ends.
Once you reach the final amount he just stops giving them.`
These are the number of beans you can give to your Pokemon to get Rare Candies:
5 10 20 50 100 200 500 1000 10000 100000
Source
May this be helpful to you.