it varies from soda to soda like for example a serving of soda is equal to 12 ounces. Lemon-lime soda contains 37.6 grams of added sugar per serving, and ginger ale contains 31.8 grams, each of which is equal to about 9 1/2 teaspoons of sugar. Cola has 38.9 grams of added sugar per serving, and pepper-type soda varieties contain 38.2 grams.