Add sliced garlic, sesame seeds, red chilli flakes and salt to a jar. Pour the hot oil into the jar and mix. Allow the mixture to cool.
Use the lid to cover the jar and ensure it is airtight. Store for up to a month on the counter, away from sunlight, or for up to 3 months in the fridge. Use as desired.
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Notes
When pouring the hot oil over the chilli flakes, make sure that your oil is the perfect temperature. If it’s too hot, then you could end up burning the spices and chilli flakes.
Keep a spoon handy to mix the hot oil with the other ingredients. This will allow the heat to distribute evenly making sure nothing gets burnt.
Allow the garlic and sesame seeds to toast lightly in the hot oil. This not only helps release the flavour better, but also reduces bitterness. Alternatively, you can fry garlic and sesame in the oil over a low flame before adding the chilli flakes and salt. This method gives you more control.