Peel, seed, and divide oranges into sections.

Peel, core, and slice pineapple into chunks.

Combine orange sections and pineapple chunks in a large serving bowl.

Chill the fruit mixture.

Combine chopped mint leaves, sugar, malt vinegar, and water in a food processor or blender.

Blend until smooth to make the dressing.

Pour the dressing over the chilled oranges and pineapple.

Let the salad marinate for at least one hour, or overnight for optimal flavor.