There's a reason that the Big Mac sauce or Starbucks drink doesn't quite taste right when we make it at home.
These companies require employees to keep these recipes hush-hush because it's what keeps the company generating income.
The information, processes, formulas, supply lists, etc., in your business are valuable and need to be protected with an NDA.
If a vendor, contractor, or employee leaves and works with your competition, they can’t legally disclose your secrets, and you’ll have legal recourse if they do.