Acorn-Fed or Grain-Fed Iberian Ham: Which to Choose? August 20, 2026 0 9 Acorn-Fed or Grain-Fed Iberian Ham: Which to Choose? When faced with a display of Iberian products, choosing between acorn-fed and grain-fed Iberian ham cannot be decided by looking at the price alone. It comes down to understanding what the pig has eaten, how it has been raised, its percentage of Iberian breed, and what kind of experience you want to bring to the table. Because great ham is not an interchangeable product: it is time, dehesa, craftsmanship and one of the most prestigious expressions of Spanish gastronomy.