Tools and charts
Dougu means tools. These are small calculators with a chart you can print and keep by the shelf or the kettle. Every number comes with its source on the page.
Essential oils
- Essential oil dilution chart and calculator
Enter how much carrier oil you have and who the blend is for, and see how many drops of essential oil to add, split between up to three oils.
- How many drops of essential oil in a diffuser
Enter your diffuser's tank size and the room it sits in, and get a drop count, a blend split and how long to run it. It is made for ultrasonic diffusers that mix oil with water.
- Essential oil safety chart: pregnancy, children and pets
Pick who you are blending for and see which of 20 common essential oils to leave out, which to use with care, and the reason for each.
- Carrier oil chart: how to choose a base oil
Pick your skin type and, if you like, the feel you want, and the chart highlights the carrier oils that fit. All 12 oils are listed with their texture, rough shelf life and what to watch for.
Tea and the Japanese kitchen
- Green tea brewing temperature, time and amount
How to brew green tea the Japanese way: pick a tea and your cups, and get the leaf, the water, the temperature and the steeping time.
- How much caffeine is in green tea, matcha and coffee
List what you drink in a day, cup by cup, and see the caffeine in each drink and in total, set against 400 mg for healthy adults or 200 mg in pregnancy.
- Miso soup calories and sodium calculator
Choose your miso, how much you stir in, the dashi and the add-ins, and see the calories, sodium and salt in each bowl and in the whole pot.