Father, please bless this Big Mac, large fries & Coke

I got this from www.studylight.org

The purpose of grace and blessings is to praise and acknowledge God as author and provider, not to somehow sanctify and improve the quality of fallen food!

Jesus said grace, or rather a blessing, before and/or after meals (Deuteronomy 8:10; Matthew 26:26, Mark 6:41 and Luke 24:30; cf. the early Christan writing Didache 10.1). The object of the blessing was not the food but God. It was inconceivable that a Jew would bless the object and not the originator/creator. The traditional Jewish blessing of God for the food, rather than of the food, is:

"Barukh attah 'Adonai 'elohenu Melekh ha-olam ha-motsi lechem meen ha-arets"
"Blessed are You, our Lord God, King of the Ages/Universe, who brings forth bread from the earth"