Don't assemble these hors d'oeuvres until the last minute, or the chips will get soggy.
Active time: 20 min Start to finish: 2 hr
Cooks' notes:
• Beet chips can be made 5 days ahead and cooled completely, then kept in a sealed plastic bag at room temperature. • Curried sour cream can be made 1 day ahead and chilled, covered.