Apparently Jewel Underhill in Michel Delving (in the Shire) sells it. I am headed there now to verify. She is supposed to also sell the following:
* Water
* Lard
* Coarse Flour
* Chicken Egg
* Fresh Butter
* Pork Shank
* Fine Seasonings
* Uncooked Chicken
* Blessed Elf-flour
* Fine Clover Honey
* Sharp Cheese
* Cinnamon
* Shire Apple
* Savory Seasonings
* Rhubarb
* Fresh Cream
* Bronze Cooking Supplies
* Golden Shire Taters