To purchase a Gift Certificate: Click on "Buy Gift Certificate", fill in your name as the sender, the amount, the recipient's name, a message and you can choose to send, by email (email address must be correct), the certificate to a friend, family member, etc... or "print the gift certificate and deliver or give yourself". Click "Buy..., review, login with paypal account, pay, "Print Gift Certificate".  Come back to website and "Enter your Redemption Code", click "Buy Now" and follow through with the redemption (you or the recipient must redeem the certificate for it to be valid).
You will now be able to present the Gift Certificate, at Biagio's, to a waitress/waiter, where they will verify redemption.
Enjoy your meal at Biagio's Trattoria.  Grazie!