猪大骨汤是用猪骨头熬出的汤，熬汤时加入了葱蒜等辅料。该汤富含蛋白质、维生素、磷酸钙等。猪骨除含蛋白质、脂肪、维生素外，还含有大量磷酸钙、骨胶原、骨黏蛋白等。猪骨性温，味甘、咸，入脾、胃经，有补脾气、润肠胃、生津液、丰机体、泽皮肤、补中益气、养血健骨的功效。儿童经常喝骨头汤，能及时补充人体所必需的骨胶原等物质，增强骨髓造血功能，有助于骨骼的生长发育，成人喝可延缓衰老。
The very best stockis made using feet. Bones themselves don't have much collagen, and straight bone broth won't gel. Most of the benefits of pork bone brothcomes from connective tissue, and there's no richer source of connective tissue than the feet.