Way I see it, as it should be like, is like what Terraria has: Healing and Mana potions that directly restore varied amounts of HP and mana, with a cooldown, but also potions that increase Health and mana regeneration. At least that allows for an extended duration, like most its potions do.

Tasty Mead's duration is so short, one could just easily avoid combat to regen stamina naturally. It doesn't hardly save any time at all, it's stamina effect would be gone in a few hits again anyhow, and (in my case) any time saved is lost trying to be safe enough out of combat to fumble for it in my inventory and be half regenerated anyhow.

Its essential value is mainly table decoration, it seems ... (although I am trying to mod it as a food for some modded NPCs.)