When you go to make cake you need to provide milk and it is only in buckets. When you make the cake you don't get the milk buckets back like you get the bowl back in mushroom stew.
Just make cake and you will see
MCPE-2957
Cake buckets
Resolved
Duplicate
0
Duplicate of MCPE-2680, please use the search function to see if your bug has already been submitted. Currently over 60% of tickets are being closed as duplicate.