There are 6 Missions for the 15th Anniversary. This year's rewards come from Bonuses achieved in the Missions, 1 drop per time.

A Ranger's Tale - Bonus: Bottled Essence of Vex

Defending Knowledge - Bonus: Miniature Horn of Unity

Sprucing Up Shakey - Bonus: Wee'er Harvester and Big Belt of the River

What Happens In Neriak... - Bonus: Diplomatic Papers
Be sure to bring a fishing pole and Bait for this task!

Plane of War Mission:
War Games - Bonus: Suffix: , Dog of War

For Magically Delicious - Bonus: Jimothy Junior
It is suggested to Pre-farm the components, as follows (1x needed per time you do task):
Bought List:
Almonds x 1 - Chef Denrun PoK
Bottle of Milk x 2 - Chef Denrun PoK
Butter x 1 - Chef Denrun PoK
Carrot x 1 - Chef Denrun PoK
Cup of Flour x 1 - Chef Denrun PoK
Cup of Sugar x 8 - Chef Denrun PoK
Dried Vanilla Beans x 1 - Chef Denrun PoK
Lettuce x 1 - Chef Denrun PoK
Short Beer x 2 - Chef Denrun or Brewmaster Berina PoK
Turnip x 1 - Chef Denrun PoK
Water Flask x 3 - Chef Denrun or Brewmaster Berina PoK
Bottle x 3 - Brewmaster Berina PoK
Kiola Nut x 1 - Cleonae Kalen Ocean of Tears (you need faction or to sneak behind her, it is trade-able)
Blood Flowers x 1 - Bjorak Stonefist Kael Drakkel (you need faction or to sneak behind him to buy it, it is trade-able)
Fennel - Alchemist Redsa PoK
Anise - Alchemist Redsa PoK
Grande Wormwood - Alchemist Redsa PoK


Mob List:
Treant Flowers x 2 - Treants in House of Thule + Zones (grounds, beasts domain, evantil, etc)


Forage List:
Drench Flower x 2 - Frontier Mountains
Koraskian Sprigger x 2 - Rathe Council Chambers


Mob OR Forage List:
Phoenix Egg x 1 - Phoenix in Plane of Fire or Plane of Air, suggested to do it in Plane of Air Phoenix Island can get a few per clear, it can also be foraged in HoHonor B reportedly


Ground Spawn List:
Corn Rose x 3 - Oceangreen Hills ground spawns all over the southern section of the zone, there are also some in Oceangreen Village



Combines:
Clear Absinthe (NOTE: this is the E at the end version there are 2) - Brewing 250 Trivial - Water Flask, Fennel, Bottle, Anise, Grande Wormwood in a Brewing Barrel
Rose Absinthe (NOTE: this is the E at the end version there are 2) - Brewing 300 Trivial - Corn Rose, Clear Absinthe in a Brewing Barrel


Vegetables - Baking 15 Trivial - Lettuce, Carrot, Turnip in a Mixing Bowl
Vodka - Brewing 135 Trivial - Water Flask, Short Beer x2, Vegetables, Bottle in a Brewing Barrel


Tumpy Tonic - Brewing 135 Trivial - Water Flask, Kiola Nut in a Brewing Barrel


Phoenix Dough - Baking 151 Trivial, NOTE: you can only combine this in the older Ovens not the new one at small bank - Bottle of Milk, Cup of Flour, Phoenix Egg in a New Tanaan Oven - NOTE: this makes 2 you only need 1