Interruptions to a Bracha

When is a new Bracha Rishona required?

1. As long as one didn’t have a interruption in one's train of thought (Hesech Hadaat), which will be clarified below, one doesn’t need to make a new Bracha Rishona. However, if one made a Bracha Achrona, and one wants to eat again a new Bracha Rishona is needed.
2. If one if planning on having coffee or tea for a length of time as one sits and learns, one Shehakol covers all the cups one drinks even there’s a long break between cups.
3. If one made a Bracha Rishona and waited 72 minutes one doesn’t need to make another Bracha Rishona.
4. If one made a Bracha Achrona only because one was afraid that Shuir Ikul would pass and one has intent to continue eating afterwards, one doesn’t need a new Bracha Rishona when one continues to eat.
5. According to Sephardim, one who went to the bathroom while eating fruit when one returns one should make a new Bracha on the fruit.

Interruption of a meal

1. If one Davened in middle of a meal it’s not considered an interruption.
2. Sleeping in middle of a meal isn’t considered an interruption except that one needs to wash Netilat Yadayim.
3. During a meal, if one touches areas of one's body which are supposed to be covered, one should wash Netilat Yadayim without a Bracha.
4. Someone who went to the bathroom during a meal isn’t considered an interruption rather one should just make Netilat Yadayim and Asher Yatzer afterwards.
5. If one said Shir HaMaalot it is not considered an interruption of the meal.