Braising is cooking food using both dry heat - from an oven or the stovetop - and wet heat - from liquid, usually water or broth.
Braising is a great way to cook tougher pieces of meat, which are usually the most budget-friendly. Braising tenderizes the meat and also gives it great flavor, like in a juicy, tender pot roast. It is also a great way to cook vegetables and make them really flavorful. Simple Cooking With Heart shows you some simple tips in this video.