Place coconut oil and spices in a large stock pot. Heat on medium high heat just a minute or so, until spices begin to pop. Add water and lentils, and turn heat to high. Bring to a boil, then reduce heat to low, add butternut squash, and simmer for 5-60 minutes, stirring occasionally. Add water as needed, never allowing the water level to go below the lentils. In last 20 minutes, add salt and ume plum vinegar.