Ration and Canteen food buff

[Mamo]

Hey guys, so how long do the buffs (from canteen, eating rations) last? If there's a HUD, where can i find it? Thanks!

[Phoenix Cat]

I believe it said till you die, the mission is over, and something else. I know there were several conditions. I'm just starting myself. IDK where the HUD info is. Would like to know myself. Hopefully someone with more experience can help.

[Rantzas]

From the Fextralife MHW wiki
"Meal effects will wear off if you faint during a quest or expedition. They will also wear off once you complete, fail, or withdraw from a quest or expedition. After eating a meal you will be unable to eat again for 10 minutes"

[Neko_oSensei]

When you're in a hunt, pre-hunt canteen buffs will end if you cart. Then, you can eat again at the portable canteen, but if you cart again less than 10 minutes later, you won't be able to eat again at the portable canteen until that time has passed.

Rations, on the other hand, are consumables. You can eat them whenever, there is no cap. But a ration lasts for 15 minutes. I think eating a new one before the last expires just reset the counter.

If by hud, you mean a tracker that displays on your screen how much time is left before the buff ends, there is none. I'm pretty sure you have to track that information manually.