Rajma (Kidney Beans) Safety Inspection

Rajma (kidney beans) are often treated with artificial red dyes like Congo Red or Rhodamine B to look uniformly dark and premium, masking the natural variations of the beans. 1. The Cotton Rub Test: Rub a handful of dry rajma seeds with a wet cotton ball. If the cotton picks up a red or pink tint, artificial dye has been applied. Natural rajma color does not rub off easily. 2. The Water Soak (Color Bleed): Soak Rajma in warm water for 15 minutes. If the water turns bright red or pink immediately, suspect artificial coloring. Natural rajma color leaches very slowly and turns the water a pale, brownish-red. 3. The Surface Shine: Examine the seeds under bright light. Pure rajma has a natural, slightly dull matte finish. If the seeds look mirror-glossy and feel "slippery" or "greasy," they have been coated with mineral oil or industrial wax. 4. The Grit and Stone Check: Spread the beans on a white plate. Look for small, matching-colored stones or greyish grit. Some retailers add stone dust or small pebbles to increase the weight of the batch.