Fine Dining Achievement Missing Recipe
Are you sure you learned the feast of truffle steak dinner and not just the feast of truffle steak?
This is what you need
http://wiki.guildwars2.com/wiki/Recipe:_Feast_of_Truffle_Steak_Dinner
not
http://wiki.guildwars2.com/wiki/Recipe:_Feast_of_Truffle_Steak