There are a few reasons why bajra roti may taste bitter. One possible reason is that the bajra (pearl millet) used to make the roti was not cleaned or washed properly before it was consumed. Bajra can sometimes contain dirt or other impurities, and if these are not removed, they can give the roti a bitter taste.
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Another possible reason is improper storage of the bajra. If bajra is not stored properly, it can absorb moisture and develop mold. Mold can release compounds that can give a bitter taste to the bajra and, consequently, to the roti made from it. It is important to ensure that bajra is stored in a dry and clean environment to prevent mold growth.
In conclusion, the bitterness in bajra roti can be attributed to the presence of dirt or impurities in the bajra itself if it is not cleaned properly. Additionally, if the bajra is not stored in an appropriate manner, it can absorb moisture and develop mold, leading to a bitter taste in the roti.