Historical clue formulations

• Backyard shindig, informally — 2018-05-20
• Good grilling? — 2012-06-28
• Backyard event, informally — 2012-04-12
• Kind of pit, briefly — 2009-12-23
• Backyard Jul. 4 event — 2008-01-11
• Sauce style — 1999-11-07