Sprinkling your own oil and vinegar on salad is the FODMAPS-friendly way to dress it, since most commercial salad dressings have one or more ingredients that are not allowed during the elimination phase of the diet. I am often asked which vinegars are OK to use? The answer is that any filtered vinegar will do, in a 1 tablespoon portion. Filtered vinegars include white vinegar, white or red wine vinegar, champagne vinegar, rice or rice wine vinegar, and most flavored vinegars.
Unfiltered cider vinegar does retain some sugar in it, and it has an excess of fructose, so it is probably not appropriate during the elimination phase unless it is a minuscule portion. You can recognize unfiltered cider vinegar because it is cloudy in appearance, not transparent, like filtered or distilled vinegars are.
Balsamic vinegar has a 2 grams of sugar in a 1 Tb. portion, but luckily for us balsamic lovers, there is more glucose than fructose in it, so it is allowed on the elimination phase. For more information about the role of the fructose to glucose ratio, click here.