Question: On Sukkos, we go sukka hopping, visiting various friends’ sukkas. If we say the beracha, leisheiv basukka in the first one, does that cover us for subsequent visits? Do we need to say a new beracha rishona and acharona at every sukka?
Answer: The Gemara (Pesachim 101b) writes that if one moves to another house while eating, they need to recite a new beracha rishona before continuing to eat (See Shulchan Aruch OC 178:1).
The Mishna Berura (178:33; 40) writes that providing one intended on continuing their meal when they said hamotzi, they may continue eating elsewhere without reciting another beracha. The Mishna Berura (178:28) stresses that they must have eaten a kezayis of bread in the first location.
The poskim extend this halacha to other food made from the 5 grains (mezonos) as well as the shivas haminim (See Shulchan Aruch OC 178:5; 184:3).
As this halacha doesn’t apply to other foods, one who said another beracha such as shehakol would need to say a beracha acharona before moving on elsewhere (providing they had eaten a kezayis).
R’ Yisroel Pinchos Bodner (The Halachos of Brochos p151) writes that if one ate other foods along with mezonos at the first location intending to continue eating elsewhere, there is a machlokes as to whether one would need to say those other berachos again elsewhere, so it is best to avoid this scenario.
The Mishna Berura (639:48) quotes the Magen Avraham (639:17) who writes that one always needs to recite a new beracha of leisheiv basukka even if one intended to go to another sukka when he said the beracha. Nonetheless, the Mishna Berura writes that walking from one sukka to the next is not considered to be a hefsek, interruption, so long as they intended to do so when they said the first beracha.In conclusion, if one plans to visit different sukkas, they should say leisheiv basukka just at the first sukka where they eat mezonos. Providing one has eaten a kezayis at the first sukka, one doesn’t repeat mezonos (or ha’etz on the shivas haminim) at the second. One must recite any other berachos at each sukka one visits.