In The Elder Scrolls IV: Oblivion, garlic can be found primarily in the city of Skingrad and at Weynon Priory, among other locations. Here are the key places to find garlic:

• Skingrad : Garlic clusters hang in many buildings, especially in basements. Notable locations include:
  • Lazare Milvan's house basement (4 garlic clusters)
  • Glarthir's basement (4 garlic clusters)
  • Rosethorn Hall basement (4 garlic clusters)
  • Summitmist Manor basement (4 garlic clusters)
  • Other houses and buildings in Skingrad also have garlic hanging, often near fireplaces or in basements

• Weynon Priory : This is a convenient early-game location where you can find 6 garlic cloves at once. Inside the main building, upstairs on Jauffre's desk and a nearby bookshelf, there are bowls containing garlic cloves

Additional garlic can also be found in:

• Imperial Legion Offices in the Imperial City Prison District (6 samples)
• Dark Brotherhood Sanctuary in Cheydinhal (4 samples)
• Various other houses and shops across Cyrodiil

Garlic clusters are considered braids hanging from ceilings or walls, and harvesting garlic from them is never considered stealing, even if done in full view of the owner

. For the vampirism cure quest, you need six garlic cloves, which can be efficiently gathered from Weynon Priory or from the basements in Skingrad, particularly Lazare Milvan's house

. Summary:

• Best early source: Weynon Priory (6 garlic cloves in one visit)
• Skingrad basements: Multiple houses with garlic clusters (4 in Lazare Milvan's basement, others in Glarthir's and Rosethorn Hall basements)
• Garlic is usually hanging in basements or near fireplaces inside buildings