The interior ministry has launched an investigation after widespread criticism of the quality of the traditional Christmas Eve dinner served to riot police on secondment to Catalonia from across Spain.
Hundreds of officers have been working away from family recently during the suspension of some of the region's autonomous powers and the recent regional elections, staying on cruise ships docked in Barcelona.
Police unions have said that “criminals get better treatment”, referring to the meal served on the ship Rhapsody.
The special festive dinner included dishes such as spaghetti, croquettes or fried cod and pepper and olive salad, and unions said Christmas meals in prison were much better quality.
Meanwhile, the government has announced that the extra police reinforcements brought into Catalonia will be withdrawn by 30 December.