These are concentrated flavorings made by distilling fruit or other ingredients with the same process used to distill perfume. Flavor essences are much stronger and purer than flavor extracts such as vanilla extract, and a little goes a long way. In fact, if you use too much, the flavor can be intensely unpleasant. For example, 1/4 to 1/2 teaspoon flavor essence would be enough to flavor 1 quart of fruit sorbet. You can buy flavor essences in large supermarkets and specialty shops and through catalogs.
To boost the flavor of strawberries
When sweetening 1 or 2 pints of strawberries, reserve the best ones whole or halved, then mash the remaining ones with sugar to taste, and add 1/4 to 1/2 teaspoon wild strawberry essence (and 1/2 teaspoon vanilla extract, if desired).
To mix or match flavor essences
Dozens of flavor essences are available: strawberry, raspberry, peach, pineapple, pistachio, chocolate, caramel, and coffee, to name just a few. They always work well when matching, say, fresh pineapple with pineapple essence, but you can experiment and add caramel along with the pineapple essence to create a great flavoring.
** Asian Recipes