Step 1

Mix hot water and sugar until sugar dissolves. Add pineapple chunks and stir, mashing pineapple lightly. Let sit at room temperature 2 hours, or cover and refrigerate overnight to infuse.

Step 2

Transfer pineapple/sugar mixture to a large pitcher or punch bowl. Add rum and lemon and stir well. Add sparkling water, stir gently, then divide among ice-filled serving glasses. Serve, garnished with lemon wedges.