Place 2 cloves garlic, onion and oil in small saucepan over low heat. Heat just until the garlic starts to simmer. Remove from heat. Let cool for 10 minutes. Remove garlic and onion pieces and discard. Pour oil into a clean, airtight container. Store in the refrigerator for no more than two to four days (read here for more information).

For just garlic infused oil (no onion), use 6 cloves of garlic and follow the above instructions.