Pour 1/2 cup dandelion petal tea (or other herbal tea) into a stand mixer. Sprinkle gelatin over the top and allow it to "bloom" for about 10 minutes.
While the gelatin is blooming, add honey, salt and the remaining 1/2 cup of dandelion petal tea to a saucepan. Cook over high heat for 8-10 minutes, until it reaches 240 degrees or soft ball stage on a candy thermometer.
When the honey syrup is up to temp, turn the stand mixer on low to break up the gelatin.
Slowly pour the hot honey syrup into the stand mixer, keeping it running on low to incorporate the syrup into the gelatin.
Gradually turn up the mixer speed (to avoid splattering) and let the mixer run on high for 6-10 minutes until the marshmallow batter forms stiff peaks and is a pale white color.
Grease a 9x9 baking pan and dust it with either powdered sugar or arrow root powder. Use a greased spatula to spread the marshmallow batter into the pan.
Allow the honey marshmallows to set up for 4-6 hours, or overnight. Flip the container over, slice marshmallows and dust on all sides with more powdered sugar or arrow root powder.
Store in a tightly sealed container for 1-2 days, or place in the freezer for up to 1-2 months.
Notes
Note: To make dandelion petal tea, be sure to remove the petals from the flower heads. Use the petals only, without any green parts. The green parts of the flower buds will make the tea bitter. Pour about 1 cup of boiling water over about 1/2 cup of petals and allow it to steep for about 15 minutes before straining.