Please choose the correct ending to complete the given sentence: Health: [header] How to make cinnamon oil [title] Choose your cinnamon. [step] Cinnamon oil can be made by using either cinnamon stick or ground cinnamon. Find out what is available in your area by checking at local grocery stores.

Ending1: Cinnamon sticks or ground cinnamon are often commercially made. Note that will sterilize any hazardous materials while still achieving appropriate oil health. Ending2: Start adding the cinnamon at the end of your cooking time so that you don't risk burning yourself. [substeps] You may also want to simply extract some from cinnamon sticks to add to sauces like soups and stews, before cooking. Ending3: If you have a local spice merchant, they may be able to help you find higher quality cinnamon than you would get at a local market. [substeps] If possible, opt to use cinnamon stick. Ending4: [substeps] Cinnamon sticks are simply powdered sugar, while ground cinnamon is powdered sugar dissolved as the oil is added. The powdered sugar makes it extra sweet.

Answer format: ending1/ending2/ending3/ending4