Callaloo is so popular in Jamaica that this leafy green is often referred to as Jamaican spinach. Although it looks something like spinach, it has a sturdier texture that’s akin to collard greens. Believed to have traveled to the Caribbean from West Africa, callaloo is cooked in many ways throughout the islands, including in ways similar to Southern braised collards. In Jamaica, it’s often sautéed, particularly with bell peppers and other vegetables for a bit of sweetness. Herbs and spice…