- One who merely tastes a food to see whether it is good or not, but does not swallow any of it, is not required to recite a blessing before tasting it. Indeed it is forbidden to recite a blessing in this case, as that would constitute a blessing in vain (Shulchan Aruch;Mishnah Berurah and Kaf HaChaim 210).
2. If the person tasting the food will also be swallowing a minute amount of the food or beverage, less than a kazayis or revi’is — some authorities say that he should recite a blessing first but others say that he should not. Since this is therefore a doubtful blessing, one should not recite a blessing. One who wishes to comply with all opinions should bear in mind that he wishes to consume the food “for the sake of eating” [as opposed to merely “tasting”], and he may then recite the blessing (ibid.).