Sorry for the necro, just adding something:
Guild foods override other guild foods.
All 30 minute cooldown foods override each other, and share the same cooldown.
EDIT: More info:
Holy waters can stack with each other.
e.g. 30% physical damage holy water + 40% critical damage holy water + 30% IDR holy water.
However syrups cannot stack with holy waters, so no doubling there.
Note: I have not tested this with stat holy waters eg. magic/str/stam holy water.
Nostrums can stack with other buffs, but only 1 of each type.
e.g. Enhanced Item Nostrum (200%) + Enhanced Ely nostrum works.
Item nostrum (100%) + Enhanced item nostrum (200%) = first nostrum overridden.
Nostrums can stack with holy waters. EXP potions count as a type of nostrum.
The 1-50 nostrum and the 1-80 nostrum cannot stack together, but can stack with other buffs.
Now, as for food cooldowns and effects, Class A-F foods, as well as remedies (such as the 10-minute strong JJoo remedy) can be resetted by channel changing. The 30-minute foods, nostrums, syrups and holy waters are unaffected, and the timer only runs while you are online - meaning you can log off and save that delicious exp buff for later, but also that you cannot bypass the 30 minute wait for the next tiny kiwi ice cream.
Avatar by LaTale.
Last edited by Deadeye87; 11-06-2010 at 03:57 PM.