I use a neutral oil such as canola oil or sunflower oil.
Warm the oil up with peels and ends.
Let it gently simmer for about 30 minutes.
The oil should only simmer, not boil or fry.
Let it sit until the next day, then give it a thorough blend.
About 10 minutes at full speed.
Strain it through a fine mesh sieve or a cloth.
Pour into bottles, and it is now ready for use.
For 5 dl of oil, I used the peels and ends of 3 large bundles of white asparagus. ?