Why is it advisable to use the braising liquid in sauces?

It preserves the maximum quantity of nutrients.

Explanation:

When braising food, such as a piece of meat, it is advisable to keep the braising liquid and use it in some other food if it cannot be consumed at that moment. This is because the braising liquid contains the nutrients that were originally in the meat you prepared earlier. Therefore, by reusing it in some way, you ensure that you preserve the maximum quantity of nutrients.

no its not a run on sentence however i think you meant wet suits not sours also a run on sentence would be like surfers surf all winter long in southern california by using wet sours to keep them warm and the live their all year long