Vinegar
Pucker up for flatter abs: In a study, test subjects consumed a daily drink containing either one or two tablespoons of vinegar or a nonvinegar placebo. After 12 weeks, those who downed vinegar had a lower body weight, body mass index and waist circumference and less visceral fat. The researchers noted that the acetic acid in vinegar appears to help inhibit fat production. Swigging vinegar isn't necessary; instead, you can incorporate it into dressings and marinades.
Source:
http://www.fitnessmagazine.com/workout/you-can-do-it/better-body-plan/flat-abs-superfoods/?sssdmh=dm17.744794&esrc=nwfitdailytip062814a#page=2
I recommend Apple Cider vinegar. POM
Pucker up for flatter abs: In a study, test subjects consumed a daily drink containing either one or two tablespoons of vinegar or a nonvinegar placebo. After 12 weeks, those who downed vinegar had a lower body weight, body mass index and waist circumference and less visceral fat. The researchers noted that the acetic acid in vinegar appears to help inhibit fat production. Swigging vinegar isn't necessary; instead, you can incorporate it into dressings and marinades.
Source:
http://www.fitnessmagazine.com/workout/you-can-do-it/better-body-plan/flat-abs-superfoods/?sssdmh=dm17.744794&esrc=nwfitdailytip062814a#page=2
I recommend Apple Cider vinegar. POM