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.
Ah thought so it meant sattu! Whats Lalluwa though? BTW Is there a slight difference between Buxar Bhojpuri and Bhojpuri spoken in Banaras? I think your Bhojpuri is more similar to the dialect spoken in Ballia/Gazipur?