Bread and water on one side of Ohio eatery (9)
I believe the answer is:
brasserie
'eatery' is the definition.
(I've seen this before)
'bread and water on one side of ohio' is the wordplay.
I cannot quite see how this works, but
'one' could be 'i' (Roman numeral) and 'i' is found in the answer.
'on' could be 're' ('on' can be mean 'with reference to') and 're' is present in the remaining letters.
'side' could be 'r' (abbreviation for right) and 'r' is present in the answer.
The remaining letters 'basse' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for brasserie that I've seen before include "Where to eat" , "Small restaurant serving alcohol as well as food" , "Simple restaurant" , "Caf" , "eatery" .)