No-Cook Green Gazpacho

Ingredients

• 1 large English cucumber
• 1 pound of tomatillos
• 1/2 of a white onion, thinly sliced, then rinsed under cold water
• 1/2 pound of poblano chiles, cored, seeded, and roughly chopped
• 1 large garlic clove
• 1/4 cup of olive oil
• 1/4 cup of brown rice vinegar
• 1 tablespoon of roughly chopped parsley
• 1 tablespoon of roughly chopped cilantro, plus more for garnish
• Kosher salt
• freshly ground pepper
• sunflower seeds, for garnish (optional)