Toast the pepper in a pan for a minute for a smoky flavour.
Deseed the peppers. Discard most of the seeds leave some to infuse the oil.
Put in a grinder and coarsely grind the chilies.
Set aside in a jar.
Heat the oil in a saucepan over medium-low heat.
Check the oil temperature. It should reach about 190C.
Leave to cool for 5 minutes.
Pour over the pepper in the jar.
Let cool, put the lid on, store and enjoy!