What can I substitute for pineapple in punch?
If this recipe from Fine Cooking is typical, it looks like pineapple is as much garnish as flavor.

The things it adds to the punch are:


Fruitiness with a complex floral quality
A somewhat tropical feeling
Some acidity


I would suggest trying instead some mango, with extra lemon juice to compensate for the acidity.

Another choice might be really nice red grapefruit supremes.