Garlic

There are few kitchens in all of Britannia that are not supplied with at least a few cloves of this spice. Garlic cloves are washed and ground into a paste, providing significant protection from harmful magic.

VERY common and easy to buy.

Lore

arlic - Even the most common of nature's gifts to our people have magical properties as can be witnessed by the power of Garlic. This pungent bulb is found in every garden in the lands of Britannia, and no stew or roast would be complete without its sharp flavor. Its aromatic nature makes Garlic a powerful reagent in the casting of magical spells, and it is used in all spells of the warding variety - be they the warding off of common and magical sickness or the repelling of beings once dead.

- from The Book of Mystic Wisdom (Ultima IV)