Ragu is an umbrella term for a meat-based Italian tomato sauce made with any type of protein (veal, beef, lamb, pork, fish or poultry), onions, carrots, celery and often pancetta. Bolognese is a popular type of ragu sauce characterized by its use of beef.  So, all Bolognese recipes are a type of ragu, but not all ragu recipes are Bolognese.  If you’re looking for a sensational Bolognese sauce, see this recipe.