I fry the seeds, I dry them in the microwave to a delicious smell and taste. It is better to fry the seeds, because the taste of pesto becomes richer.
Then add the pepper and seeds to the blender and whisk well.
Add salt, oil, lemon juice and pepper mixture to taste.
Rosemary is also added either by half a teaspoon, or by a full spoon, but in one case or another it must be present, because it gives piquancy.