An enjoyable meal

It's unrepeatable and unforgotable for me.
At a hot summer's day's noon, for about 20 yeasr ago.
We had a lunch. Lunch and you don't know what the lunch!
Ley to describe that situation and details, because these are bold in my mind.

It was a gathering with all of my family members and my relatives
All of us were child or young.
Everyone was there, no one was dead.

We had AbdooghKhiar (a Persian food, includes yogourt, cucumber, water, dried bread,