Srimad Bhagavatam Canto 10, Chapter 20, Text 29

 SB 10.20.29

dadhy-odanam samanitam
 silayam salilantike
sambhojaniyair bubhuje
 gopaih sankarsananvitah
 
Translation: 
 
Lord Krsna would take His meal of boiled rice and yogurt, sent from home, in the company of Lord Sankarsana and the cowherd boys who regularly ate with Him. They would all sit down to eat on a large stone near the water.
Srimad Bhagavatam Canto 10, Chapter 20, Text 28
Srimad Bhagavatam Canto 10, Chapter 20, Text 30-31