This is the 12407th most frequent Spanish word.
manchega
"Manchega" refers to something or someone from or related to La Mancha, a region in Spain.
In this sentence, 'manchega' is an adjective derived from 'La Mancha', a region in Spain, describing the style or origin of the food.
La comida manchega tiene un sabor único.
The Manchegan cuisine has a unique flavor.
Here, 'manchego' is used as an adjective indicating the type of cheese unique to the La Mancha region.
Compré un queso manchego delicioso en la tienda.
I bought a delicious Manchego cheese at the store.
In this example, 'manchegas' serves as an adjective qualifying 'costumbres', again referencing the cultural practices of La Mancha.