Historical clue formulations

• Produce in bunches — 2023-08-20
• Concord and sultana — 2023-08-06
• Bunch at a fruit stand — 2019-12-17
• Napa Valley sight — 2015-12-02
• Vine fruits — 2014-04-14
• Bunch at a grocery store — 2010-10-31
• Basis of 85-Down — 2009-11-08
• Balsamic vinegar source — 2009-02-13
• They may be sour — 2001-05-24