骨头煲多久

一般1到1个半小时就可以了。
猪骨高汤的做法
1.猪棒骨洗净控干水冷水下锅，煮至沸腾出沫后关火，倒去锅中水，再用温水洗干净猪骨
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2.洗锅后重新注入清水，放入抄水后洗净的棒骨，加两三片姜，一个葱结和适量料酒，水要一次加够，高过猪骨4到5厘米，因为熬煮的过程中水份会蒸发变少
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3.大火烧开，改中小火保持微微沸腾的状态煮啊煮，其间若有浮沫可撇去
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4.熬煮至汤汁见少，汤色发白，猪骨酥烂即可加盐调味关火
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5.用滤网过滤掉葱姜碎骨
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6.装入保鲜盒，晾凉后放冰箱，冷藏两三天，冷冻一两周之内食用为好，煮馄饨下面熬粥做汤都特别棒
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炖骨头汤时的注意事项
1、炖骨头汤（或鱼汤），最好是用冷水。因为一般的肉骨头上总带有一点肉，如果一开始就往锅里倒热水或开水，肉的表面突然受到高温，肉的外层蛋白质就会马上凝固，使得里层的蛋白质不能充分地溶解到汤里，只有一次加足冷水，并慢慢地加温，蛋白质才能够充分溶解到汤里，汤的味道才更鲜美。
2、在水开后加少许醋，使骨头里的磷钙溶解在汤内，这样炖出来的汤既味道鲜美，又便于肠胃吸收。同时，炖汤不要过早放盐。因为盐能使得肉里含的水份很快地跑出来，会加快蛋白质的凝固，影响汤的鲜味。
健康提示：骨折早期莫喝骨头汤
在生活中，人们常有骨折后饮食滑头汤的习惯，以期补充钙质，使骨折早日愈合。这种习惯是极端错误的。其实，骨折早期骨头汤喝得越多，骨折愈合得越慢。当然，在骨折愈合的中、晚期即原始骨痂形成期及骨痂改造塑型期，由于有机纤维的骨样组织逐渐钙化形成新生骨，加强改造，形成正常骨，骨样组织的骨化需要充分的钙、磷质，此时补食骨头汤还是很有益处的。