I mean the "offer chocolate to gunther" option on the backyard on your free day, I assumed it was like just a chocolate bar or something.
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Oh, that's what you mean. You need the chocolate cornet. The reason it doesn't appear on my list is that it's not a recipe and therefore cannot be made. You only get this from Kamau once you reach your second bonding level. From that point on, you can keep getting new ones from him using the "chocolate cornet" dialogue option