If you really love oven - roasted garlic, and have some on hand in the refrigerator (I
find the garlic puree is really easy to store and keeps for ages, not in oil, just plain garlic puree in a covered
glass small jar, and those seriously deathly spores don't grow), simply stir in a spoonful when the soup is nearly finished cooking and has reduced substantially.
Just recently I
found at Walmart these Better Homes & Gardens
Glass Bathroom Vanity Apothecary
Jar (this one is the
small size) and I'm using them for storing sugar.