11. It acquires its characteristic sourness through inoculation with lactobacillus bacteria after the boil. 12. In other ways, sourness is very complex. 13. And Briscoe's redneck sidekick catches all the sourness of deprivation he feels. 14. Tasters raved about its sourness and " fresh-squeezed taste ." 15. For sourness , tamarind and other tart fruits such as green mango step in. 16. Maybe he should be saluted for pioneering the modern art of spreading sourness of spirit. 17. Unfortunately, most Americans are not enamored enough of sourness to experience its many modes. 18. The combination is wonderfully tart with a citrusy sourness and a shimmering ruby red color. 19. Sourness is caused by the taste of acids, such as vinegar in alcoholic beverages.20. Sourness is the taste that detects acidity.