As popular as chocolate was in Spain,it didn't spread to the rest of Europe until nearly a hundred years later,when a Spanish princess married the French king and made chocolate fashionable.By the 17th century,the chocolate drink had gained widespread popularity in France,and an ambitious Frenchman opened the first chocolate house in London.Soon,chocolate drinks were sold everywhere in London,and English bakers began using it in cakes-the first mention of chocolate being eaten and not drunk.