Milk molds extremely fast. It will show signs of mold in as early as three days. For example, if you took fresh milk, poured it in a glass and let it sit out as oppose to cheese or bread that will show signs a day or two later.
Foods that are exposed to moisture & air tend to grow mold much faster than foods that are sealed or covered.
This is not a type of its a drink milk mold the fastest
I think mold grows the fastest on the bread
It grows on all materials
Isn't it bread or some sort of similar food. :P