You can really play with the flavors in this recipe. Add a bit of sriracha/hot sauce/jalapeños for heat. I love the way ginger complements blackberries. Citrus is also lovely! I shared a few ideas at the end of the recipe. Find the dressing recipe in a 1-minute tutorial on YouTube.
Find it online: https://www.weaversorchard.com/blackberry-salad-jam-refresher/