Garlic onion, mushroom Don't eat them

लशुनं गृञ्जनं चैव 

पलाण्डुं कवकानि च।

अभक्ष्याणि द्विजातीनाम् 

अमेध्यप्रभवाणि च ।।

(मनुस्मृतिः 5-5)

Garlic, radish, onion and mushroom as well as those that have grown in an unholy place like grave yard etc, all these are not to be eaten by dwi-jatis.