One needs some different oils in every kitchen, and one of my favorites is 'spicy oil'. Another one is oil with a garlic taste. Of course, all these types of oil are readily available in the grocery store, but you can just as well make them yourself; they will fully meet your wishes and aspirations!
Moreover, after a while you have quite a collection of suitable bottles in the cupboard anyway, and most of the ingredients are usually laying around or left over!
In this case I had, as always, mountains of garlic, so a few cloves were not to be missed. And the chili had dried nicely, being handy as it's the kind I needed.
I broke the chili and sliced it lengthwise, and peeled and crushed the garlic. Throw those in the bottle and top with your favorite oil - all the way to the top (!) - and then let it stand for a week, and your next dish will start with oil that already has the basic flavors you want.
Of course this also works with, for instance, rosemary, thyme and other herbs. And you can also apply the same technique to vinegar.
All in all, always a win: it's easy, it costs nothing (especially compared to the ready-made products), and it's 'own production'!