He said Khoini Khayel ba ka? Means, did you eat Khaini?
Sattu or Satwa or Satua is basically gram (brown chickpeas) flour mixed with barley flour and is used to make dough with water and eaten like that with Chutney (Preferably green Mango Chutney) and raw Onion.
Sattu - Wikipedia, the free encyclopedia
I too speak Bhojpuri (My dad is from Buxar/Kaimur), but it would be wrong to term it as a language. It is more of a dialect.
Thanks for explaining, hamake samajh mein na aayal Satwa & Lalluwa kaa ha. khoini kaa ha?