Hibiscus Water: Chemistry & Health in a Cup 1. The Chemistry (pH Indicator) Without Lemon: Anthocyanins in the petals remain at a neutral pH (~5–6), displaying a deep maroon hue with an earthy flavor.  With Lemon: Citric acid lowers the pH (~2–3), protonating anthocyanins into flavylium cations to yield a vivid crimson red with a tangy taste.  2. Key Health Benefits Antioxidant-Rich: High in polyphenols and Vitamin C to combat oxidative stress. Heart & Digestive Support: Promotes healthy blood pressure, aids digestion, and keeps you hydrated. 3. Quick Preparation 1. Brew: Steep dried petals in hot water for 10 minutes; strain to get dark maroon tea.  2. Transform: Squeeze in fresh lemon juice to watch the color shift instantly to bright red.  3. Serve: Sweeten to taste and serve warm or over ice!