Answer: tastetests

AnswerCrossword Clue
TASTETESTSSamples
TASTETESTSCommercial challenges
TASTETESTSCola wars "battles"
TASTETESTSCommercial staples
TASTETESTSSome ad features
TASTETESTSSubjective side-by-side comparisons
TASTETESTSOral exams?
TASTETESTSCoke and Pepsi have had many of them