Related Clues:

• One of Kool-Aid's original seven flavors
• Winesap, e.g.
• Tech giant
• 21-Across' tempter
• IBM rival
• Fruit-yielding tree
• Arbor morsel
• Temptation for Atalanta
• Pie type
• Lunchbox staple
• Cider flavor
• Flavor of Calvados brandy
• Stayman, for one
• *Item on a schoolmarm's desk, maybe
• Forbidden fruit, traditionally