Giardinera is a mix of vegetables preserved in a vinegar brine that Italians refer to as sottaceto (under vinegar). Nonna Giulia always has her pantry stocked with a few jars for when company drops by unexpectedly (which is often). They make a wonderfully effortless antipasto when paired with olives and cheeses, and she usually sends her guests home with a jar or two, like an Italian-style party favor or bomboniera.