Serve over plenty of ice in stemless wine glasses or tumblers, using a slotted spoon to hold the fruit back.
Garnish with a cinnamon stick and a thin apple slice; for a party, rim the glasses with cinnamon sugar.
Put out marcona almonds, olives and manchego alongside — the salt makes the drink taste drier and brighter.
Use fresh unfiltered cider, not filtered sweetened apple juice, which tastes flat and candy-like.
Keep the wine dry. Sauvignon blanc, pinot grigio and albariño all work; moscato plus cider plus liqueur is cloying.
Do not macerate longer than 24 hours — the apples brown and turn mealy and the drink gets bitter.
Add the sparkling top only as you pour, never in advance, or it goes flat.
For a hard cider version, replace the sparkling water with chilled dry hard cider. For a non-alcoholic version, use sparkling cider and apple juice in place of the wine, brandy and triple sec.