I just got home from the store and opened this expensive block of cheddar to make dinner. There is a small spot of green fuzz on the corner, but the rest of the block looks completely fine. Do I just

If the mold has penetrated deeply or if there are multiple spots of mold across the cheese, it might be safer to discard it.

If the cheese has an unusual smell or texture, these could be signs of spoilage beyond mold, such as bacterial growth, which is not safe to consume. In cases where the cheese may have been improperly stored or left at room temperature for extended periods, err on the side of caution and dispose of the cheese.