Meal Ingredients and their Effect on Buff Duration (First inclusion only; duplicates result in +30 sec only; you can mix parts of different dragons without wasting their buffs)
Chickaloo Tree Nut (+40 sec)Acorn (+50 sec)Hylian Rice (+1 min)Rock Salt (+1 min)Tabantha Wheat (+1 min)Cane Sugar (+1 min 20 sec)Milk (+1 min 20 sec)Goat Butter (+1 min 20 sec)Bird Egg (+1 min 30 sec)Goron Spice (+1 min 30 sec)Star Fragment (+1 min 30 sec)Dragon Scale (+1 min 30 sec)Dragon Claw (+3 min 30 sec)Dragon Fang* (+10 min 30 sec)Dragon Horn* (+30 min)
All other meal ingredients: +30 sec
* The maximum buff duration is 30 minutes. You can't go beyond that even if you use four dragon fangs or two dragon horns.
Notes
Meal ingredients can be added to elixirs.
Elixir ingredients cannot be added to meals.
Dragon parts do not count as monster parts when making elixirs.
When making something for temporary extra hearts, note that you can not have more than 30 effective hearts. If you have 26+ heart containers, it's stupid to cook more than one durian at a time as any more than that will be wasted.
You can not benefit from having more than three levels of a buff. If you're wearing the Barbarian armor set to get level-3 Attack Up, you will get no benefit from eating an Attack Up meal. You can use meals or elixirs to augment armor, or vice versa, however, to a maximum of level 3. Cold resistance, heat resistance, and flame guard only go to level 2 because there's nowhere in Hyrule that has level-3 severity weather.
Equipping a Flameblade, Great Flameblade, Flame Spear, Fire Rod, Meteor Rod, or a lit torch provides level-1 cold resistance.
Equipping a Frostblade, Great Frostblade, Frost Spear, Ice Rod, or Blizzard Rod provides level-1 heat resistance.
