Do your prep first, have all of your vegetables ready.In a pot over medium heat, add oil, ginger, garlic and shallot. Cook for 2 minutes and add onions. Cook for about 5 minutes, until onions are translucent. Add carrots and daikon, and cook for 2 minutes. Add water, stir, add dashi, sake, mirin, sugar and soy, stir well.
Bring to boil, lower heat and simmer for 30 minutes (until daikon and carrots are soft).