bread,wheat,biscuts with honey,dates or olives, wine or water
bread
The Romans ate breakfast whenever they got up in the morning and were hungry.
pasta
The ancient Romans used to eat chicken, beef and veal during the festivals.
On a stove heated by a fire/coals. (But breakfast was more often cold than hot)
wheat and bread
wheat and bread
The ientaculum was/is the Latin for breakfast. The ancient Romans generally had a light snack type breakfast which may have been a bread chunk dipped in oil or honey and a drink of juice or posca. However if they had been hosting or a guest at a dinner the night before, they would eat leftovers from the dinner. It was perfectly acceptable for guests to bring large napkins to a dinner and take "a little something" home with them.
With their mouths
Yes.
Fruit.
They didn't.