Details when practice vipassana

I have a few questions: * How far do i need to be mindful? In the Satipatthana Vipassana by Mahasi, he said: "On meeting with a person in the imagination, it should be noted as "meeting, meeting", can i just say "imagine, imagine"? * If i taste something, i always want to "deconstruct" the aliment (it's sweet, salty, sour ...), it is a good thing to do (for Vipassana meditation)? Or I need just to say "tasting, tasting" Do I need to be mindful of details? (I'm a thinking of my mother, cat...) Sorry for my English. o/