https://www.preces-latinae.org/thesaurus/Basics/Mensae.html
Before meals:
> Bless us, O Lord, and these Thy gifts which we are about to receive from Thy bounty, through Christ our Lord. Amen.
After meals:
> We give Thee thanks, almighty God, for all Thy benefits, who livest and reignest for ever and ever. Amen.
From Baltimore Catechism #3 from 1921 (p. 28) about grace before / after meals:
https://archive.org/details/baltimore-catechism-no.-3-kinkead-1921/page/28/mode/2up
> Q. 112. What does "Grace" at meals mean?
> A. "Grace" at meals means the thanks we offer God for the food we are about to receive or have just taken.
> Q. 113. Why should we say "Grace" at meals.
> A. We should say "Grace" at meals to show our gratitude to God, who has given us all we possess and daily supplies our wants.
> Q. 114. Is it wrong to despise or waste our food?
> A. It is wrong to despise or waste our food, because we thereby slight the goodness of God, who owes us nothing.
> Q. 115. Is it a sin to neglect "Grace" at meals?
> A. It is not a sin to neglect "Grace" at meals, but only a mark of our ingratitude; for if we are to thank God for all His gifts we should do so especially at the time they are given.
