I had a 7 scoop tall ice cream stack but then I ran out of money for ice and it died. :(
I have to ask though, how do the sell price calculations work? Do you get a bonus for selling tall stacks? It seems to me like tall stacks of ice cream take more ice per day to maintain, so trying to grow large stacks of ice cream isn't economically worth it.
Also, if you don't mind me asking, what was your original concept, and when did you pivot?