If you have the product to send now that is fine!
You have to be able to send the product.
It needs to fit the rules of what is accepted.
In fact what you asked it covered here:
2. No amateur entries. All entries must be commercially made (commercial kitchen, co-packer, mass-production) or you must be in accordance with your local requirements for production, with labels and tamper-free packaging (preferred), and be available for sale somewhere on the Internet*, even if it's only your own website. If amateur entries or entries that appear unsafe for consumption are received they will be discarded and no refund will be given, so do not try to bend this rule.
*If your product is not for sale on the Internet yet, you may still submit it, but you must have other products under that name brand for sale on the Internet, or a website that states where your products can be purchased.