The December 2004 cooking revamp made all normal quality (NQ) non-stackable foods last 3 hours. High quality (HQ) non-stackables last 4 hours - so yes, 4 hours is possible.
Also, all % foods have caps. The lower the cap, the higher the %. Thus an L1 will get more added attack from a grilled hare than a meat chiefkabob. The idea is to encourage people to use different foods as they progress in levels. Thus, yes again this is not good MP food for a low level mage. This is better for middle levels.
in the game description it says this lasts for 240 mins.... that means it lasts for 4 hours... if it does this would be an awesome food... i have never heard of a food lasting more than 3 hours at a time... can anyone confirm... i would do it myself however (Tarutaru )(Cooking )(Too Weak To Be Worthwhile[Red][/Red] 39.? <--- sorry i dont follow my skillups that closely
First of all this gives you 13% mp up to a certain cap. Second of all the amount stated for normal orange kuchen listed in today's update was false, and based on patterns with other foods that give +mp % and hq, this probably caps at 80, not 90.