Help with custom storage block

Long story short I wanna make a coffee machine in Minecraft. I've made the coffee grinder; but I want to make it so that you can fill the grinder with a stack of coffee beans, and when right clicked it'll give you ground coffee (subtracting one of the beans stored in the grinder) is this possible? I've no clue how to start with this so if anyone knows of any helpful videos or guides that'll explain this I'd really appreciate it! Thanks in advance <3