Complex sentence: The traditional process of preparation is slow, since it involves harvesting green peppers and then let them mature to make an intense reddish, later dried naturally in the sun and are then smoked over wood fire.
Split into simpler sentences: The traditional process of preparation is slow, since it involves harvesting green peppers and then letting them mature to develop an intense reddish color. The peppers are dried naturally in the sun and are then smoked over a wood fire.