What does it take to start a protein bar company? (co-packer, FDA, etc?)

What are the ways you can go about starting a protein bar company and the associated costs?

I'm assuming 2 ways are:

- Finding a co-packer
- Making it yourself by renting a commercial kitchen?

But what about FDA approval etc?

And how much does a co-packer actually cost? E.g., formulation of recipe, packaging, MOQ for first batch etc...

Would love to hear your experience with this.

from What does it take to start a protein bar company? (co-packer, FDA, etc?)