Rubén Valbuena, cheesemaker: “We think we made the first blue donkey milk cheese”

One daysingle sourceOne outlet reported this, once - no second voice in this corpus.

All 1 reports on Wed, 2 September 2026

What it is about

Rubén Valbuena Granja Cantagrullas Buleza Zamora

Who published it, and when

How it spread - 1 original report

Wed, 2 September 2026
1 report
- El País (Spain)03:25first to report
  Rubén Valbuena, quesero: “Creemos haber elaborado el primer queso azul de leche de burra”
  Granja Cantagrullas, en colaboración con la cooperativa Buleza en Zamora, ha logrado un producto único llamado Serón que supera los 250 euros el kilo