In a small skillet over medium heat, add the oil and heat until shimmering.
Remove from heat and add the minced garlic. Let sizzle for 10-30 seconds. Be careful not to burn the garlic.
Add the red pepper flakes and any other aromatics like sesame seeds.
Immediately remove from heat and pour through a fine mesh strainer into a heatproof jar or bowl. This straining process will remove any fried garlic bits or aromatics.
Allow the chili garlic oil to cool to room temperature, then cover and store in the fridge for up to 1 month.
To use, drizzle the chili garlic oil over noodles, fried rice, dumplings, grilled meats, roasted vegetables, and more. Enjoy!