You don't. Mangia bene is Italian. In English you say "eat well."
"Eat them!" as a command (imperative) in English is Mangiali! in Italian.
Yes, the ITALIAN RENASSIACE did eat the chocolate cake.
Eat well is the literal English equivalent of 'Mangia bene'. A looser equivalent is 'Have a good meal' or 'Enjoy your food'. In the word by word translation, the imperative 'mangia' means '[you] eat'. The adverb 'bene' means 'well'.
Edward Giobbi has written: 'Edward Giobbi (b. 1926)' 'Edward Giobbi' -- subject(s): Exhibitions 'Pleasures of the good earth' -- subject(s): Cookery, Italian, Gardening, Italian Cookery 'Eat right, eat well--the Italian way' -- subject(s): Cookery, Italian, Italian Cookery, Low-cholesterol diet, Low-fat diet, Recipes, Italian Cooking
they can eat anything
Italian food is very popular.
"Let's go out to eat!" in English is Andiamo a mangiare fuori! in Italian.
No, Italian people are not the same as Spanish people. For example, they speak Italian, and eat Italian food. Spanish people don't do that, they speak Spanish, and eat Mexican food.
"I am well" in English means Sto bene in Italian.
"It's time to eat!" in English means È ora di mangiare!in Italian.
Eat Italian