4 Tbsp butter
1 yellow onion, chopped
1/2 yellow bell pepper, chopped
1 large carrot, chopped
1/2 teaspoon cumin seeds
1 teaspoon turmeric
2 teaspoons curry powder
1 teaspoon yellow mustard seed
2 cloves garlic, minced
2 lbs Yukon Gold potatoes, peeled, quartered, cut into 1/2-inch slices
4 cups chicken broth or vegetable broth (use vegetable broth for vegetarian option)
2 cups water
2 cups roughly chopped cauliflower florets (about 1/2 a head)
1 1/2 teaspoons salt (more to taste)
1 cup corn kernels (frozen is fine)
2 small yellow summer squash, roughly chopped
1/2 cup chopped fresh cilantro leaves (or parsley) for garnish