Butternut Squash Potato Salad

Bahan-bahan (4 porsi)

• 5 -7 small-medium red skin potatoes
• 1 1/2 cups butternut squash ((peeled and cubed // 1/2 large squash yields ~1 1/2 cups))
• 3 Tbsp Greek yogurt, plain*
• 1 Tbsp light or regular mayo*
• 1 tsp grainy mustard
• 1 Tbsp white vinegar
• Sea salt & ground black pepper
• 1/4 tsp ground coriander ((optional))
• 2 Tbsp green onion ((chopped))
• 2 medium radishes ((chopped))