Limited menu Meal delivery services have done an admirable job differentiating themselves. Some help households of just one or two learn to cook, and others advertise ready-made meals for big families. Some specialize in soups and smoothies. And then there's Ramen Hero, which delivers restaurant-quality ramen noodle soup that you can make at home. Each kit contains noodles to boil, and frozen packets of broth and toppings that you heat sous-vide. The menu could be bigger, and the meals are pricey compared to just about any other meal delivery service, but Ramen Hero doesn't require a subscrip...