Bring a large pot of water to a boil and generously season with salt. Add in carrots and potatoes and simmer 4 minutes. In a small skillet heat cumin and coriander until aroma is released. In a blender combine spices, cilantro, ginger, jalapeno, garlic, onion and lime juice. Blend until it forms and paste. Add 1 to 2 tablespoons of water if necessary. Add broccoli and cauliflower to boiling water and cook for 1 minutes. Stir in zucchini and simmer for 1 minute. Drain vegetables and return to pot. Add chicken stock, coconut milk and 2 to 3 tablespoons curry paste. Bring to a simmer and serve with basmati rice