Pistou is a classic French sauce from Provence made with olive oil, basil and garlic. It’s like an Italian pesto without pine nuts or Parmesan cheese.

 https://www.acouplecooks.com/pistou/  

Safety precautions

• Never store homemade garlic in oil at room temperature.
• The anaerobic environment created by storing garlic in oil can be conducive to the growth of Clostridium botulinum, the bacteria that produces the toxin causing botulism.

https://www.acouplecooks.com/basil-vinaigrette/