2 tablespoons butter
1 tablespoon olive oil
1/2 cup chopped white onion
1/2 cup minced green onion
1 1/2 tablespoons minced garlic
l/2 cup minced celery
1/2 cup minced carrot
1/2 cup peeled and minced zucchini or summer squash
2 cups peeled potatoes, in 1/2-inch cubes
5 cups cauliflower florets
1 teaspoon curry paste or powder, or more to taste
2 tablespoons lemon juice, or more to taste
6 cups vegetable or chicken stock
1/4 cup fresh basil
1/4 cup minced parsley
Salt and freshly ground pepper, to taste