For a deeper color and flavor, substitute canned tomato puree for 1 cup of the water.
Chile peppers contain oils that can irritate your skin and eyes. Wear plastic or rubber gloves when working with them.
Cubanelle & Red Hungarian Peppers
Either of these large peppers can be used. the Cubanelle pepper is mild but extra flavorful, while the Hungarian pepper is on the spicier side. Mix and match them for richer flavor. In a pinch, you can swap in red bell peppers, but the flavor will be sweet instead of spicy.