The Henna Brew is your own mixture of things that can mixed together into your henna powder to make exquisite henna paste.
you need something acidic such as lemon juice, or from concentrate (citric acid), grapefruit juice, pink grapefruit juice, orange juice, any citrus will do as long as it is at room temperature. you can add red wine, black gunpowder tea, ground coffee, camomile, clove powder, beet powder. these ingredients do make a good brew and they are not all necessary and required, but the more you have of them the better the results. In a large pot, you can bring all these ingredients into a warm temperature on the stove, not completely to a boiling point. then let the mixture cool off and add it to your henna powder.