coriander seeds • olive oil • large white onion, peeled and sliced • large cloves garlic, finely chopped • tomato paste or white miso • kosher salt • carrots, any color, peeled and cut in 1/2-inch pieces • stock plus 4 cups of water, or 6 cups of water • small head cauliflower, cut into florets • lemon zest • lemon juice • Optional for serving: smoked chipotle or smoked paprika, salt flakes, cilantro