Our bar of the week comes from Chocolat Bonnat, France's oldest bean-to-bar chocolate maker.    Made from single-origin Ecuadorian cacao, Equateur is a 75% dark chocolate with a mellow warmth not usually associated with the region.  Dark, rich notes of fig, caramel, and black tea plus Bonnat's usual meltingly smooth texture add up to a bar that blankets your palate with warmth and comfort.