View source for How long does one have to say Birkat HaMazon?

# If one forgot to make Birkat HaMazon right away, one may make the Bracha as long as one is full. <ref>Yalkut Yosef (Brachot pg 300) </ref>
# However, if one just had a Kezayit and isn't full, one may only make Birkat HaMazon up to 72 minutes after one ate. <ref> Yalkut Yosef (Brachot pg 300) </ref>
# If one has a very long meal and continues to make appitizers or drinks, one may make the Birkat HaMazon as long as the meal continues even 4 or 5 hours. <ref> Yalkut Yosef (Brachot pg 301) </ref>
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