In French, the phrase "large portion" is called "grande partie" and "large meal" is "repas copieux".
a hot meal is called "un repas chaud" in French
repas
Repas (masc.)
plat préféré
Bon apetit
"Enjoy your meal" is "appréciez votre repas" in French. A standard formula is "bon appétit".
In French, "large" is translated as "large" and "heavy" is translated as "lourd".
We say "Bon appétit"
You could borrow the French and say "bon apetit", or say "Enjoy your meal." It literally means "good benefit".
le repas de midi literally: midday meal
Grand.
sea shells are coquillages in French. For the purpose of a meal, they are called 'fruits de mer' on the menu.