Bases can be improved with little labor by simmering the diluted or made-up product for a short time with some mirepoix, a sachet, and a few bones or meat trimmings, if possible. This helps give a fresher, more natural taste to a highly processed product.
Bases are also added to stocks to supplement them when only a small quantity of stock is on hand.
Bases are sometimes added to weak stocks to give them more flavor, but this is not as good a practice as making the stock properly in the first place.