Struggle with crafting system

This week I focused on finishing up some NPC logic such as walking animations for the NPCs. But the task that took up most of my time was the crafting system. I was tasked with creating a system where if an apple and potato item combined, they would create a new item as a result. It seemed like a simple task at first, and I was doing just fine with it in the beginning. However, as soon as I got to the slot creation logic, it all went downhill. I spent a good amount of my time just looking through the already implemented chest inventory to try and see how it was implemented. I was going in circles trying to wrap my head around how it all worked. In the end. I managed to create the system that I wanted, I accomplished this through the help of my teammate Zoleda, She gave me a full explanation of how her whole inventory system worked. And that ended up helping me find all the answers I needed. to finish the crafting system.