Cebo (grain-fed), cebo de campo (free-range grain-fed) or bellota (acorn-fed): what really changes (and which to choose)
The Castanoble team · 6 min read
Published on 12 September 2026

“So can you really tell the difference between de cebo (grain-fed) and de bellota (acorn-fed)?” It is the question we hear most often at the counter, and the honest answer is: yes, you can tell, but it is not always the difference that matters. Here are the three feeding regimes recognised by the Iberico Quality Standard (Norma de Calidad del Ibérico), what changes in the ham and when to choose each one. All with the product sheets for our pieces in front of us, so as not to claim more than there is.
De cebo (grain-fed): Iberico raised on the farm
The Iberico pig is raised on a farm and eats natural cereal-based feed. What makes this ham Iberico is the breed: the fat infiltrates the meat and gives it that marbling and that succulence that a white pig ham does not have. With a long cure (ours exceeds thirty months), the result is a balanced ham with a clean flavour that almost everyone likes. White label.
Who it is for: everyday eating, a first purchase of Iberico, the safe gift. It is our best-seller, and that is no coincidence.
De cebo de campo (free-range grain-fed): Iberico raised in the countryside
The same pig, but raised in the countryside: it eats natural cereal-based feed as well as the grasses and plants of the countryside, and it moves around. That exercise refines the meat and distributes the fat better, and the plants add a touch more aroma. There are no acorns, so do not expect the sweetness of bellota (acorn-fed), but the difference from de cebo (grain-fed) can be noticed in a blind tasting. Ours is also cured for more than thirty months. Green label.
Who it is for: those who already know cebo (grain-fed) and want to go up a step without reaching the price of bellota (acorn-fed). It is the step most people skip and the one that surprises the most.
De bellota (acorn-fed): Iberico fattened during the montanera
This is where everything changes. The pig spends the montanera (autumn and winter) roaming freely in the dehesa, eating holm oak and cork oak acorns and the grasses of the countryside, and this diet transforms the fat: it becomes more fluid, with that sheen that melts at the touch and a sweet, long-lasting flavour that cannot be achieved any other way. From there, the breed makes the difference between the red label (crossbred Iberico, 50% or 75%) and the black label (100% Iberico). Our Iberico de bellota (acorn-fed) ham is cured for more than three years; the 100% Iberico de bellota (acorn-fed) ham, for more than four.
Who it is for: the special occasion, the gift that is remembered, the person who truly loves ham. And a tip from the counter: if it is your first bellota (acorn-fed), start with the red label. It has all the acorn character and costs considerably less than the 100%.
What changes and what does not
- The fat changes: from firm and white in cebo (grain-fed) to fluid and glossy in bellota (acorn-fed). It is the first thing you see in the slice.
- The flavour changes: cleaner and more direct in cebo (grain-fed), more herbaceous in cebo de campo (free-range grain-fed), sweet and long-lasting in bellota (acorn-fed).
- The price changes, and considerably: the montanera is expensive because each pig needs hectares of dehesa and months of time.
- The breed does not change between cebo (grain-fed), cebo de campo (free-range grain-fed) and bellota (acorn-fed) Iberico (all can be 50%). Where it does change is in the 100% bellota (acorn-fed).
- The technique does not change: all three are salted, washed, dried and cured in the same way. What changes is how long they can withstand curing and how long they deserve.
Bellota (acorn-fed) is not “better” than cebo (grain-fed) in the way one mark is better than another: it is a different ham. Choosing well means knowing which table it is destined for.
The four Iberico grades, with their tag and their months of curing on each product page
View hams and shoulders