How to Make It
Stir together lemongrass, ginger, sugar, and lime juice in a small saucepan over medium-high. Bring to a simmer, stirring until sugar dissolves, about 4 minutes. Cool completely, about 30 minutes. Remove lemongrass and ginger, and discard.
Combine pineapple, strawberries, mango, kiwi, mint, and lemongrass syrup in a large bowl. Toss to combine.