8 cups whole milk (not ultra-pasteurized)
3 to 4 tablespoons lemon juice
Kosher salt
2 pounds washed regular (not baby) spinach leaves
2 small or 1 large tomato (8 ounces), roughly chopped
6 cloves garlic, roughly chopped
2-inch piece ginger, peeled and roughly chopped
6 tablespoons ghee
1 teaspoon cumin seeds
1 serrano chile, minced
1 large onion, finely chopped
1/2 teaspoon ground turmeric
1/4 teaspoon cayenne
2 teaspoons garam masala
1/2 teaspoon sugar
1/2 cup heavy cream
Lemon wedges, for serving
Serving suggestion: steamed basmati rice or Indian flatbread