How do you use real testimonials in the feed?

A testimonial that works is a line from a guest, first name only, about a dish still on the menu, used with permission. Inventing a quote or signing it «María, happy guest» does not. The floor keeps two or three real lines said at the table or in a review, and confirms permission. The feed fills with gold quotation marks that never say what was eaten, and nobody can check them. At most two pieces a month with a real quote, the dish beside it and the source review or message filed.