'Monsieur,' Madame d'Arestel, Superior of the convent of the Visitation at Belley, once said to me more than fifty years ago, 'whenever you want to have a really good cup of chocolate, make it the day before, in a porcelain coffeepot, and let it set. The night's rest will concentrate it and give it a velvety quality which will make it better. Our good God cannot possibly take offense at this little refinement, since he himself is everything that is most perfect.'
Jean Anthelme Brillat-Savarin (2009). “The Physiology of Taste: or Meditations on Transcendental Gastronomy”, p.124, Vintage