Even if it is mold, just remove it off the surface. It doesn't penetrate far on hard cheeses like Gouda. Also the reason why I don't buy pre-grated cheese, it

Even if it is mold, just remove it off the surface. It doesn't penetrate far on hard cheeses like Gouda. Also the reason why I don't buy pre-grated cheese, it doesn't age well. It also tends to be lower quality to begin with.