Now this man used to go up year by year from his city to worship and to sacrifice to YHWH of hosts at Shiloh, where the two sons of Eli, Hophni and Phinehas, were priests of YHWH....After they had eaten and drunk in Shiloh, Hannah rose...
1 Samuel 1:3,9

Elkanah's sacrifice in 1 Samuel 1 could have been one of the three Feasts of Ascent (Pesach, Shavuot, or Sukkot). Whatever the occasion, Elkanah made a peace offering and ate it with his family, a BBQ to honor God.