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Donate- Only intended to eat or drink certain amount and then changed mind:
Non-Hamotzi foods:[1] One who recited a blessing on Non-Hamotzi food or drink and had intent at the time of the blessing to only eat one or two of that food, such as one or two fruits, and to only drink one or 2 cups of the beverage, then if he decides to eat or drink more than his initial intent, then he must repeat the before blessing prior to doing so. This applies even if he changes his mind while he is still in the middle of eating the original amount of food or drink. [However, an after blessing is not recited until he finishes all of his eating or drinking.]
Hamotzi meal: By a Hamotzi meal, one who recited Hamotzi with intent at the time of the blessing to only eat one or two slices of bread, then if he decides to eat more bread then this matter is subject to the same debate explained in Halacha 2b regarding one who decides in the middle of a meal no longer continue eating, in which we conclude that Safek Brachos Lihakel and hence if one decides to eat more bread, a blessing is not to be repeated.[2] This, however, only applies if one has more bread at home, if however one has to leave his home to retreat more bread or somehow unexpectedly received more bread, or was informed that indeed he has more bread at home, then a new blessing must be repeated prior to eating more bread.[3]
| Scenario | Initial Intent | Change of Mind | Before Blessing | After Blessing | Notes |
| Non-Hamotzi foods | Eat/drink one or two | Decides to eat/drink more | Must repeat before blessing | Not recited until finishes all eating/drinking | Applies even if still eating original amount |
| Hamotzi meal (bread) | Eat one or two slices | Decides to eat more bread | Blessing is not to be repeated | — | Safek Brachos Lihakel; see Halacha 2b |
| Hamotzi meal (bread, special case) | Eat one or two slices | Has to leave home to get more bread or unexpectedly receives/is informed of more bread | New blessing must be repeated | — | Only applies if more bread not present at home |
[1] Ketzos Hashulchan 56:9 based on Admur 179:7 and Seder 5:8 and M”A 179:6; Piskeiy Teshuvos 179:7; See Chapter 7 Halacha 19F!
[2] See Seder 5:1 and Piskeiy Teshuvos 179:6 footnote 29 this follows the same wall as one who decided to no longer eat and then changed his mind during a meal which is subject to debate and we rule Safek Brachos Lihakel
[3] Seder 5:1; Luach 7:1; Admur 179:1; Taz 174:6
