How to Make Penicillin at Home (Just in Case SHTF)

Considering how expensive healthcare is, I wouldn’t be surprised if there aren’t some DIY types also wanting to learn how to make penicillin.

Because penicillin is “just mold bread” and was discovered by accident, it might seem pretty easy to make penicillin. Yes, it is – but it is really hard to make penicillin safely.

If you want to learn how to make DIY penicillin, here’s what you need to know.

Step 1. Isolating Penicillin Bacteria

Put a piece of bread, cantaloupe, or citrus fruit in a container in a dark place at 70 degrees F. It should be in a closed (but not airtight) container.

The bread or fruit will start getting a gray mold. This gray mold will eventually turn a bluish-green color. This is the mold that you want for making penicillin!

Step 2. Re-culturing the Penicillin

The greenish-blue mold you grew contains penicillin. Some people call this mold “natural penicillin” and say you can use it immediately.  Unfortunately, this isn’t the case.

To get the benefits of penicillin from mold, it has to be further cultured.

Step 3. Streaking Your “Petri Dish”

Now it is time to move your penicillin mold spores to your “Petri dishes” that have the potato broth in them. There is a very specific method that scientists use for growing cultures. It is called “streaking.”