1/4 cup cider vinegar
1/4 cup canola oil
2 tablespoons sugar
Kosher salt and freshly ground black pepper
12 ounces fresh pineapple, cut into 1/2-inch cubes
1 large, ripe mango, cut into 1/2-inch cubes
1/2 head red cabbage, finely shredded
3 green onions, green and pale green parts only, thinly sliced
1/4 cup roughly chopped fresh cilantro leaves
Combine the cider vinegar, canola oil, sugar and some salt and pepper in a bowl and whisk until the sugar dissolves.
Combine the pineapple, mango and red cabbage in a large bowl. Season with salt and pepper, add the dressing and toss to coat. Add the green onions and cilantro and toss again. Cover and refrigerate for at least 1 hour before serving.