In wok or large frying pan, melt ghee over medium-high heat. Add beef and brown on all sides, about 7 minutes. Remove and set aside meat, add onions and carrots and cook until soft, about 8 minutes. Return meat and add curry paste, stirring to coat. Pour in coconut milk and stir until uniformly red. Add aminos and fish sauce; stir and reduce to medium-low heat. Simmer for 20 minutes. Before serving add, Thai basil and stir to wilt. Serve over cauliflower rice.