In a medium pot over low heat, combine all ingredients, except the chilli flakes and salt. You want it all to infuse slowly and not burn so about 100-120C. Leave this to just bubble gently for 20 mins.
Have a large heatproof bowl ready with chilli flakes in it (make sure it's large as the oil can spill over).
Using a strainer, carefully pour the oil mixture over the chilli flakes. Leave to infuse and cook. Add a few tsp of salt at this point while it's cooling.
Store it in a sealed jar and get spooning.
