Respuesta :

For every 2/3 cup, vanilla need = 4 tsp
So, for 1 cup of sugar = 4 / 2/3 = 4*3 /2 = 12/2 = 6

In short, Your Answer would be 6 teaspoons

Hope this helps!
Jieep
For every 2/3 cup,

vanilla is = 4 tsp

 1 cup of sugar = 4 / 2/3 = 4*3 /2 = 12/2 = 6

6 tsp of vanilla should be used for every 1 cup of sugar.