Report Abuse. If they are making chili with black or kidney beans as an additive they usually drain and rinse.The black beans have black juice and that is not a good color for beans.You could just add the juice and then season to get a good chili taste going...Maw-Maw · 8 years ago.Thumbs up. 0.eport Abuse. If they are making chili with black or kidney beans as an additive they usually drain and rinse.The black beans have black juice and that is not a good color for beans.You could just add the juice and then season to get a good chili taste going... Maw-Maw · 8 years ago.