In a blender, combine ¼ cup of aroniaberries with water. Process until smooth.
Heat a saucepan to medium and add quinoa. Toast for three minutes, stirring occasionally. Add water mixture and bring to a simmer. Reduce heat to low and cover. Cook for 25 to 30 minutes, until the water is absorbed. Remove from stove and allow to sit covered for 5 to 10 minutes. Transfer to a baking sheet and allow to cool.
Transfer quinoa to a medium bowl. Toss in spinach, red onions and remaining aroniaberries.
Make dressing by adding vinegar, olive oil, maple syrup and garlic to your blender. Process until smooth. Season to taste with salt and pepper.
Toss salad with desired amount of dressing and serve at room temperature or chilled.