Homemade chili flakes

In a food processor pulse dried chili peppers for couple of times.
We don’t use oven since baking rises temperature in our apartment, but you can use dry roasting method for drying chillies.
Just don’t use microwave, that’s really not good for food. Hang them on a dry place without direct sunlight. Our chilies were hanging from the fire sprinkler in our kitchen, on a piece of thread, for 2,5 weeks.