How do you eat in monster hunter tri?

Answer 1

with the healing potions or the steak, ( you must have meat and a material that the boss son gives you)

yes but also if you mean by eat you go to the cafeteria which is beside the guildie offline where there is a french cat you get him after killing royal ludorth if i remember, or if your online you sit at a table and eat there, this will either boost your resist to element attacks, attack, defense, oxygen, health and stamina depending what combos you choose, but they can also lower them if you get a bad combo.

hope that helps you