Queso de La Serena 
Queso de La Serena is a sheep milk cheese from the La Serena district of Extremadura, Spain, curdled with a coagulant from cardoon pistils. Young, with a creamy centre, it is called Torta de La Serena and eaten with a spoon; aged longer it firms up and tastes stronger.
Key Facts
| Country of Origin | Spain |
| Specific Origin | Province of Badajoz (21 municipalities in La Serena) |
| Protection | PDO (1996) |
| Milk Type | Sheep |
| Milk Treatment | Unpasteurized |
| Fat Content | At least 50% in dry matter |
| Rind | Waxy, yellow to ochre |
| Texture | Soft to semi-hard |
| Flavor | Slightly bitter, pleasant |
| Aroma | Spicy notes |
| Colors | Yellow to ochre |
| Forms | Wheel-shaped, 250 g to 3 kg, minimum diameter 8 cm |
| Age | 60+ days |
| Rennet Type | Vegetable (Cynara cardunculus) |
| Also Known As | La Serena, Torta de La Serena |
What is Queso de La Serena?
Queso de La Serena comes from the comarca of La Serena, in Extremadura, Spain. It is made from the milk of Merino sheep raised in that region, and the PDO rules allow nothing but natural whole milk from healthy animals, with no colostrum or preservatives.
The milk is curdled with a coagulant found in the pistils of cardoon, Cynara cardunculus. Only a small amount goes in, which keeps the cheese mild. It then ages for at least sixty days.
Wheels run from 250 grams to 3 kilograms. The height is 40 to 70 percent of the diameter, and the diameter is never less than 8 cm. The taste is slightly salty, with a light bitterness that comes from the cardoon.
While the centre is still creamy the cheese is sold as Torta de La Serena, and the traditional way to eat it is to slice off the top and scoop out the inside with a spoon. Left to mature further it hardens and the flavour strengthens, and at that point it is called Queso de La Serena.
Two neighbours are often confused with it. Torta del Casar, also from Extremadura, uses milk from mixed breeds and more coagulant. Queijo Serra da Estrela, from Portugal, is also pure Merino sheep milk but uses more coagulant still, so it tastes stronger and more bitter.
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