reduce jelly cost of mushroom-in-jelly and jelly cake

[Archiplex]

2kg of jelly for both makes both of these recipes much more expensive slime-wise compared with meat-in-jelly, of which is a notoriously amazing food. these other two foods dont have amazingly great recipes (unless using rare resources) but arent bad either, but it's hard to ever want to make them when you could make meat-in-jelly instead.