Combine cucumbers, Greek yogurt, avocado, lemon zest, lemon juice, garlic, scallions, dill, basil, jalapeño, olive oil, and apple cider vinegar in a high powered blender. Blend until smooth and creamy. Season to taste with salt and pepper, and blend again to combine. Chill for at least 4 hours or overnight.
To serve, top with thinly sliced cucumber, chopped fresh dill, a drizzle of extra virgin olive oil, and a drizzle of thinned Greek yogurt or half and half. Serve immediately!
