Hearts abound on February 14, and few symbols (and gifts) are more widely associated with a holiday than heart-shaped boxes of chocolate are with Valentine’s Day.
Chocolates became trendy in the mid-19th century when the first chocolate bar was made by British company J.S. Fry & Sons by combining cacao powder with sugar and cacao butter to make a rich, melt-in-your-mouth treat that was markedly dif…