Slice 1 cucumber and ½ red onion thinly and place in a medium bowl
Drain 1 (8 oz) can Dole® Pineapple Tidbits (reserve 2 Tbsp juice) and save pineapple for layering
In a small bowl, whisk together ¼ cup vinegar, 2 Tbsp pineapple juice, 1 Tbsp soy sauce, 1 Tbsp sugar or honey, ½ tsp chili flakes or chili crisp, ½ salt, and 1 tsp sesame oil (optional)
Pour dressing over cucumber mixture and toss to coat, reserving a little extra
Refrigerate for 30 min. to let flavors mingle, stirring once or twice for even pickling
In a mason jar, layer pineapple tidbits and dressed cucumber mixture, then add any reserved dressing
Top with sesame seeds and green onion before serving
