Prepare the coffee. Combine the ground cardamom with enough regular-grind coffee to brew 4 cups of very strong black coffee. Brew using your preferred coffee maker.
Sweeten and flavor. While the coffee is freshly brewed, stir in the sugar and almond flavoring until the sugar dissolves completely.
Cool the coffee. Allow the flavored coffee to cool until lukewarm before pouring it over ice.
Prepare the glasses. Fill four 12-ounce highball glasses halfway with crushed ice.
Add the coffee. Pour the cooled coffee into each glass until approximately two-thirds full, leaving room for the cream.
Finish with cream. Add approximately 1 tablespoon of heavy cream to each glass and stir gently for a creamy, evenly blended drink.
Optional layered presentation. Instead of stirring the cream directly into the coffee, hold a spoon just above the coffee's surface and slowly pour the cream over it. This helps the cream float on top, creating an attractive layered appearance.